The price per can has been lowered by R2, making the standard can cost R7.
what is equation ?A mathematical assertion that establishes the equivalence of two expressions is known as an equation. It is made up of two sides, a left and a right side, separated by the equal sign (=). The equation, which is typically used to determine an unknown variable's value, requires that the values on both sides be equal. Exponents, logarithms, multiplication, division, addition, subtraction, and other mathematical operations can all be used in equations.
given
Let's say that the standard price per can is "x" Rand.
The revised price is (x-2) Rands if the price is decreased by R2.
The issue is that 14 cans are being offered for the customary price of 10 cans. Thus, we can construct the equation:
10x = 14(x-2) (x-2)
After finding x, we obtain:
10x = 14x - 28
-4x = -28
x = 7
The price per can has been lowered by R2, making the standard can cost R7.
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the circumference of a circle is 43.96 meters. what is the cirlces diameter ? use 3.14 for pi
Answer: the circles diameter is 14 meters
Step-by-step explanation: {Formula for circumference
2TUR = 43.96 of a circle : L 27UR}
2x3 . 14r = 43.96
r=7
d=2r=2x7=14 {d=2r}
Answer:
The circumference of a circle can be calculated using the formula:
C = 2πr
where C is the circumference, π is the mathematical constant pi (approximately 3.14), and r is the radius of the circle.
To find the diameter of the circle, we can use the formula:
d = 2r
where d is the diameter and r is the radius.
Given that the circumference of the circle is 43.96 meters, we can use the formula for circumference to solve for the radius:
C = 2πr
43.96 = 2 × 3.14 × r
r = 43.96 / (2 × 3.14)
r = 6.998 meters
Now we can use the formula for diameter to find the diameter:
d = 2r
d = 2 × 6.998
d = 13.996 meters
Therefore, the diameter of the circle is approximately 13.996 meters.
Step-by-step explanation:
mag delete nito napaka bob0 nya promise
Bonus Sampling from a Random Processes (1 Point)
You were just hired as a data scientist at one of the most popular startups in San Francisco and they have a problem for you to address. Assume that you are given a biased coin that appears as heads with probability p (i.e., p != 1/2). Your first task at this company is the use this coin in a black box to produce another random process with outputs 1's and 0's
with probability 1/2. How do you achieve this task?
One possible way to achieve this task is by using the following method:
1. Toss the biased coin twice.
2. If the result is two heads or two tails, discard the result and toss the coin again.
3. If the result is one head and one tail, record the result as a 1 if the first toss was a head and a 0 if the first toss was a tail.
This algorithm works because the probability of getting heads followed by tails or tails followed by heads is equal to 2p(1-p), which is symmetric around p=1/2. Therefore, the probability of outputting 1 is equal to the probability of outputting 0, which is 1/2. This method of generating a random process with a desired probability distribution from another random process is known as rejection sampling.
This method will produce a random process with outputs 1's and 0's with probability 1/2, regardless of the bias of the coin. This is because the probability of getting one head and one tail in two tosses is the same for both biased and unbiased coins, and we are only recording the result when we get one head and one tail. Therefore, this method will produce an unbiased random process from a biased coin.
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I NEED HELP ASAP! I give brainlist to whoever answers **ALL** of them (simplest answer possible)
1. Find the perimeter of the base of the treasure chest in feet
2. Find the area of the base of the treasure chest in square feet.
3. Can you use the expression from part c in exercise (#3) to find the surface area of the treasure chest in exercise 2? Explain
4. One cubic inch of sand weighs about 1 ounce. Find the weight of the treasure chest (in pounds) after it is filled with sand. Assume that the chest weighs 20 pounds when empty.
*There are 16 ounces in a pound
The answers to each question are:
1. the perimeter is 10 ft.
2. the area of the chest’s base is 6,
3. This wouldn’t work.
4. The chest weighs 956 pounds when filled with sand
What is surface area?
The space occupied by a two-dimensional flat surface is called the area. It is measured in square units. The area occupied by a three-dimensional object by its outer surface is called the surface area.
1. The base of the treasure chest is the bottom edge
Because most chests are rectangles, we can assume that the base is also a rectangle
This means that the perimeter would be 3+3+2+2, which is 10 ft
2.
To find the area of the chest’s base, you must multiply 3 by 2
3*2 is 6, so the answer is 6 feet squared
3.
It looks like it is asking if you can find the surface area by multiplying the base by one of the side lengths (again, not sure which one because it’s not labeled)
This wouldn’t work regardless of the side length, however, because base times height is equal to the volume of the chest and not the surface area
4. To do this, it would be easier to find how much sand can fit in the chest, and then do weight after you have that figure
There are 12 inches in a foot, so the measurements of how much sand can fit in the chest could be found by multiplying 12 by the side length
This would leave you with measurements of 36, 24 and 24
Volume is base * height, so first multiply the two base measurements (36 and 24)
This leaves you with 624
Multiply that by height (24) and you get 14,976 cubic inches of sand
Because each cubic inch of sand weighs about 1 ounce, we know that the weight of the sand is 14,976 ounces
To find out how much that is in pounds, divide 14,976 by 16
This leaves you with 936 lbs
Add the additional 20 that comes from the chest and you get 956 lbs total
The chest weighs 956 pounds when filled with sand
Hence, the answers to each question are:
1. the perimeter is 10 ft.
2. the area of the chest’s base is 6,
3. This wouldn’t work.
4. The chest weighs 956 pounds when filled with sand
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the area of a rectangle is 384^2 and its breadth is two-third of its length.find its perimeter
Answer:
look down
Step-by-step explanation:
let length be" x"
accroding to question
breadth= 2x/3
we know,
Area of rectangle= l × b
384=x × 2x/3
calculate
PLSS HELP IT DUE TONIGT
Answer:
mean 36.2 median is 33
Step-by-step explanation:
For median you put the numbers in least to greatest and then find the middle which in this case is 33 and 34 so 33 is in between those two numbers so that would be the median. For the mean you add all the number together which is 362 and then divide by the number of numbers that there is which is 10
A direct variation includes the points (-6, 18) and (-4, n). Find n.
Write and solve a direct variation equation to find the answer.
The value of n will be 12.
What is direct variation ?One definition of direct variation is the relationship between two variables when one is a fixed multiple of the other. They are said to be in proportion, for instance, when one variable affects the other. The equation has the form b = ka if b is directly proportional to a. (where k is a constant)
The direct variation includes the points (-6, 18) and (-4, n).
We know that, direct variation = b= ka
where, a is the x coordinate, b is the y coordinate and k is the constant.
So, For (-6, 18),
we have, 18 = -6k
So, k = -3
Now, For (-4, n),
we have, n = -4k
n = -4×-3 ( putting k= -3)
= 12
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Ann went for a walk on Saturday when the timing started she was already traveling at the given rate she walked in a straight line away from home then she returned home along the same path on her way home she stopped for lunch the graph shows her distance from home
At any given time during the walk complete the table and then use the graph and table to answer the following questions
Ann average speed for the entire walk was 1 mile per hour.
Time (hours) Distance from Home (miles)
0 0
1 2
2 4
3 6
4 5
5 4
6 3
7 2
8 1
9 0
1. When Ann was walking, how far away from her house did she get?Ann walked for three hours, covering a distance of 6 miles, the furthest she had walked from her house.
2. When did Ann make her lunch break?
At 4 hours, Ann took a break for lunch.
3. What time did Ann arrive at her house?
After the nine-hour mark, Ann went back home.
4. What was Ann's average walking speed for the first three hours?
The total distance Ann walked during the first three hours of her walk (6 miles) divided by the time required to complete that distance can be used to determine her average pace (3 hours). She moved at an average speed of 2 miles per hour for the first three hours.
5. What was the average pace of Ann's walk?During the entire trek, Ann travelled a total of 9 miles (since she returned to her starting point). It took 9 hours to travel the entire trip. She walked at a mile an hour on average for the entire distance.
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the area is 9/20 sq mile and the width is 1/5 the length what are the dimensions.
By answering the above question, we may state that The rectangle's equation measurements are 9/4 miles by 9/20 miles.
What is equation?A mathematical equation links two statements and utilises the equals sign (=) to indicate equality. In algebra, an equation is a mathematical assertion that proves the equality of two mathematical expressions. For instance, in the equation 3x + 5 = 14, the equal sign separates the numbers by a gap. A mathematical formula may be used to determine how the two sentences on either side of a letter relate to one another. The logo and the particular piece of software are usually identical. like, for instance, 2x - 4 = 2.
A is equal to (9/20) sq miles wide at x miles.
[tex]A = (9/20) (width x length) = x(x/5)\\9x/20 = x^2/5\\45x = 20x^2\sx^2 - 45x/20 = 0[/tex]
[tex]x=(-b \sqrt(b2 - 4ac)) / 2a[/tex]
Here, an equals 1, b equals -45/20, and c equals 0. By entering these values, we obtain:
[tex]x = (-(-45/20) +\sqrt((-45/20)^2 - 4(1)(0))) / 2(1) x = (45/20 ± sqrt(2025/400)) / 2\sx = (45/20 ± 45/40) / 2\sx = (9/4) or (1/4)[/tex]
We may disregard the negative answer since a rectangle's length cannot be negative. As a result, the rectangle has a length of 9/4 miles and a width of (1/5) x (9/4) = 9/20 miles.
The rectangle's measurements are 9/4 miles by 9/20 miles.
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Find an equation of the line with gradient 2 and that passes through the point (1,1)
The equation of the line with gradient 2 and that passes through the point (1,1) is y= 2x -1.
What is Slope?A line's slope is determined by how its y coordinate changes in relation to how its x coordinate changes. y and x are the net changes in the y and x coordinates, respectively. Therefore, it is possible to write the change in y coordinate with respect to the change in x coordinate as,
m = Δy/Δx where, m is the slope
Given:
Gradient = 2
and, line passes through the point (1,1).
We know using Slope intercept form y= mx+ b
and, y= 2x+ b
Now, line passes through the point (1,1).
1 = 2(1) + b
b= -1
So, the equation of line is y= 2x -1.
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Pls help!
In a video game each player earns 5 pts for reaching the next level and 15 pts for each coin collected. Make a table to show the relationship between the num of coins collected c and total pts p graph the ordered pairs and analyze the graph.
Answer:
Refer to pic..........
A guidance counselor wants to determine if there is a relationship between a student’s number of absences, x, and their grade point average (GPA), y. The given data list the number of absences and GPAs for 15 randomly selected students.
Using technology, what is the value of r2?
–0.56
–0.32
0. 32
0.56
By using technology, the value of r² is equal to; C. 0.32.
What is a coefficient of determination?In Mathematics, a coefficient of determination (r² or r-squared) can be defined as a number between zero (0) and one (1) that is typically used for measuring the extent (how well) to which a statistical model predicts an outcome.
Based on the given data, the correlation can be determined by using an online graphing calculator as shown in the image attached below. Since the value of r is equal to -0.56, the coefficient of determination (r²) can be calculated as follows;
r² = (-0.56)²
r² = 0.3136 ≈ 0.32
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Complete Question:
A guidance counselor wants to determine if there is a relationship between a student's number of absences, x, and
their grade point average (GPA), y. The given data list the number of absences and GPAs for 15 randomly selected students.
Number of Absences
15
1
0
6
9
12
3
3
1
2
7
0
4
9
10
GPA
2.1
4.3
4.5
3.2
4.0
1.7
3.8
2.9
3.6
3.4
2.6
3.1
2.8
2.8
4.1
Using technology, what is the value of r²?
O-0.56
O-0.32
O 0.32
O 0.56
Which statement is true? O All irrational and rational numbers can be written as fractions of two integers. O All irrational and rational numbers have decimal expansions. O All irrational and rational numbers have repeating decimals. O All irrational and rational numbers have terminating decimals. (please be fast i dont have much time.) 20 POINTS
The true statement is all irrational and rational numbers have decimal expansions. (second option)
What are rational and irrational numbers?A rational number is a number that can be expressed as a fraction of two integers . Rational numbers have terminating decimals and they have decimal expansions. Examples of rational numbers are 1.5, 2 and 4.25
A irrational number is a number that cannot be expressed as a fraction of two integers . Irrational numbers have repeating decimals. Examples of irrational numbers are 22/7, 1/3.
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Kelsey is planning on driving to New York City for vacation. He has to choose between a shorter route (214 mi) that has tolls ($9.75) and a longer route (236 mi) that has no tolls ($0.00). If his car averages 34.0 miles per gallon of gas, and the price of gas is $3.29/gal, how much money does he save by taking the longer route?
By taking the longer route, the amount of money Kelsey will save is $7.38.
To find out how much money Kelsey saves by taking the longer route, we need to calculate the total cost of each route and compare them.
For the shorter route, the total cost is the cost of gas plus the cost of tolls.
- The cost of gas is the distance traveled divided by the miles per gallon of the car, multiplied by the price of gas: (214 mi / 34.0 mpg)($3.29/gal) = $20.48
- The cost of tolls is $9.75
- So the total cost of the shorter route is $20.48 + $9.75 = $30.23
For the longer route, the total cost is just the cost of gas, since there are no tolls:
- The cost of gas is (236 mi / 34.0 mpg)($3.29/gal) = $22.85
- So the total cost of the longer route is $22.85
Now we can compare the two costs to find out how much money Kelsey saves by taking the longer route:
$30.23 (shorter route) - $22.85 (longer route) = $7.38
Therefore, Kelsey saves $7.38 by taking the longer route.
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A restaurant plans to use a new food delivery service. The food delivery service charges $5.48 for every two meals delivered, plus a $3.50 service fee. What is the slope of this situation?
The slope of this situation is equal to 5.48.
What is the slope-intercept form?In Mathematics, the slope-intercept form of the equation of a straight line is given by this mathematical expression;
y = mx + c
Where:
m represents the slope or rate of change.x and y represent the data points.c represents the y-intercept or initial value.Based on the information, an equation that models the situation is given by this mathematical expression;
y = mx + c
y = 5.48x + 3.50
In conclusion, we can reasonably infer and logically deduce that the slope is 5.48 and the y-intercept is equal to 3.50.
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Determine the possible number of positive real zeros and negative real zeros for the polynomial function P(x)=6x^(4)-x^(3)+5x^(2)-x+9 given by Descartes' Rule of Signs.
According to Descartes' Rule of Signs, the possible number of positive real zeros for a polynomial function is determined by the number of sign changes in the coefficients of the terms in the function.
Similarly, the possible number of negative real zeros is determined by the number of sign changes in the coefficients of the terms in the function when x is replaced with -x.
For the polynomial function P(x)=6x^(4)-x^(3)+5x^(2)-x+9, there are 2 sign changes in the coefficients of the terms: from 6 to -1, and from 5 to -1. Therefore, the possible number of positive real zeros is 2 or 0.
For the polynomial function P(-x)=6(-x)^(4)-(-x)^(3)+5(-x)^(2)-(-x)+9, there are 0 sign changes in the coefficients of the terms. Therefore, the possible number of negative real zeros is 0.
In conclusion, the possible number of positive real zeros for the polynomial function P(x)=6x^(4)-x^(3)+5x^(2)-x+9 is 2 or 0, and the possible number of negative real zeros is 0.
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Which is the next step in the construction of an angle bisector of angle ABC?
A. Use a straightedge to connect point A to the rightmost vertex of the equilateral triangle.
B. Use a straightedge to connect vertex B to the rightmost vertex of the equilateral triangle.
C. Use a straightedge to connect point C to the top vertex of the equilateral triangle.
D. Use a straightedge to connect point C to the rightmost vertex of the equilateral triangle
Option D, The next step in constructing an angle bisector of angle ABC is to use a straightedge to connect point C to the point where the angle bisector intersects side AB.
To construct an angle bisector of angle ABC, the next step is to use a straightedge to draw a line from vertex C to the point where the angle bisector intersects side AB.
Draw angle ABC using a compass and a straightedge.Place the compass at vertex B and draw an arc that intersects both sides of the angle.Without changing the compass width, place the compass at vertex C and draw a similar arc that intersects both sides of the angle.Use a straightedge to draw a line connecting the two points where the arcs intersect.The line drawn in step 4 is the angle bisector of angle ABC. Label the point where it intersects side AB as point D.Use a straightedge to draw a line from vertex C to point D. This line will bisect angle ABC.Learn more about the angle bisector at
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A doctor measured a patient's resting pulse rate at
78 beats per minute.
Write an equation in Y = mx + b form.
Answer:
1440
Step-by-step explanation:
hope this helps.......
I need help with this please
The amount of Kingston's birth weight that was much bigger than Karmichael would be = 1 pound 4 ounces
How to calculate the birth weight of Kingston?The weight of Kingston at birth = 9 pounds 2 ounces
The weight of Karmichael at birth = 7 pounds 11 ounces.
Next, the weights are converted to ounces such as:
1 pound = 16 ounces
For 9 pounds = 16×9 = 144 ounces+ 2 ounces = 146 ounces
For 7 pounds = 16×7 = 112 ounce + 11 ounces = 123 ounce
The difference between the birth weight of Kingston and Karmichael = 146-123 = 23 ounce
Convert 23 ounce to pounds = 23/16 = 1 pound 4 ounces
Therefore, amount of Kingston's birth weight that was much bigger than Karmichael would be = 1 pound 4 ounces.
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Tossing a coin and rolling three number cubes. Fundamental counting principle?
There are 432 possible outcomes when tossing a coin and rolling three number cubes.
Yes, it is possible to calculate the total number of outcomes when tossing a coin and rolling three number cubes using the basic counting method.
According to the basic counting principle, if there are m ways to do one task and n ways to complete another, then there are m * n methods to complete both tasks sequentially.
There are two possible outcomes from this coin toss (heads or tails), and each of the three number cubes can be rolled six different ways (1 through 6). As a result, according to the basic counting principle, there are:
2 * 6 * 6 * 6 = 432
Hence, when rolling three number cubes and tossing a coin, there are 432 possible results.
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Need help with pre-calculus homework
Answer:
See below for proof.
Step-by-step explanation:
Given equations for x and y:
[tex]x=v_0 \cdot t \cdot \cos \theta[/tex]
[tex]y=-16 \cdot t^2 + v_0 \cdot t \cdot \sin \theta[/tex]
Rearrange the equation for x to isolate t by dividing both sides of the equation by v₀ · cos θ:
[tex]\implies t=\dfrac{x}{v_0 \cdot \cos \theta}[/tex]
Square the equation for x:
[tex]\implies x^2=(v_0 \cdot t \cdot \cos \theta)^2[/tex]
[tex]\implies x^2={v_0}^2 \cdot t^2 \cdot \cos^2 \theta[/tex]
Rearrange to isolate t² by dividing both sides of the equation by v₀² · cos²θ:
[tex]\implies t^2= \dfrac{x^2}{{v_0}^2 \cdot \cos^2 \theta}[/tex]
Now we have created expressions for t and t² in terms of x.
Substitute these into the equation for y:
[tex]\implies y=-16 \cdot t^2 + v_0 \cdot t \cdot \sin \theta[/tex]
[tex]\implies y =-16 \cdot \left(\dfrac{x^2}{{v_0}^2 \cdot \cos^2 \theta}\right)+ v_0 \cdot \left(\dfrac{x}{v_0 \cdot \cos \theta}\right) \cdot \sin \theta[/tex]
Simplify:
[tex]\implies y =-\dfrac{16}{{v_0}^2} \cdot \left(\dfrac{x^2}{\cos^2 \theta}\right)+\left(\dfrac{x}{\cos \theta}\right) \cdot \sin \theta[/tex]
[tex]\implies y =-\dfrac{16}{{v_0}^2} \cdot \left(\dfrac{1}{\cos^2 \theta}\right) \cdot x^2+x \cdot \left(\dfrac{\sin \theta}{\cos \theta}\right)[/tex]
[tex]\textsf{Use\;the\;identities\;\;$\sec^2\theta=\dfrac{1}{\cos^2\theta}$\;\;and\;\;$\tan\theta=\dfrac{\sin\theta}{\cos\theta}$}:[/tex]
[tex]\implies y=-\dfrac{16}{{v_0}^2} \cdot \sec^2 \theta \cdot x^2+x \cdot \tan \theta[/tex]
[tex]\textsf{Hence\;proving\;that\;\;$y=-\dfrac{16}{{v_0}^2} \cdot \sec^2 \theta \cdot x^2+x \cdot \tan \theta$}.[/tex]
The equation can be written as,
[tex]y = \dfrac{-15x^2} { (v_o^2) + (\dfrac{1} { v_o^2})tan^{-1}(\dfrac{y} { x})}[/tex].
What is a projectile motion?An object or particle that is projected in a gravitational field, such as from the surface of the Earth, and moves along a curved path while only being affected by gravity is said to be in projectile motion.
To begin with, we know that the horizontal displacement of the projectile is given by [tex]x = v_ot cos(\theta)[/tex], where vo is the initial velocity of the projectile and θ is the angle it makes with the positive x-axis. Therefore, we can rearrange this equation to solve for time t:
[tex]t = \dfrac{x} { (v_o cos(\theta))}[/tex]
Next, we can use the equation for vertical displacement under constant acceleration due to gravity: [tex]y = -16t^2+ v_ot sin(\theta)[/tex]. Substituting the expression for t derived above, we obtain:
[tex]y = -16[\dfrac{x} { (vo cos(\theta)}]^2 + v_o([\dfrac{x} { (v_o cos(\theta)}] sin(\theta)[/tex]
Simplifying this expression, we get:
[tex]y = \dfrac{-16x^2} { (v_o^2 cos^2(\theta)) + x tan(\theta)}[/tex]
Now, we need to eliminate the angle θ in terms of x and y. We can do this by using the fact that tan(θ) = y / x, which gives:
[tex]\theta= tan^{-1}(\dfrac{y} { x})[/tex]
Substituting this expression for θ into our previous equation, we obtain:
[tex]y =\dfrac{ -16x^2 }{(v_o^2 cos^2(tan^{-1}(\dfrac{y} { x}))} + x\ tan(tan^{-1}(\dfrac{y} { x})[/tex]
Since tan(tan⁻¹(z)) = z, we can simplify this expression further:
[tex]y = \dfrac{-16x^2} { (v_o^2 (1 + (\dfrac{y} { x})^2))} + y[/tex]
Finally, by rearranging terms, we get the desired equation:
[tex]y = \dfrac{-15x^2} { (v_o^2) + (\dfrac{1} { v_o^2})tan^{-1}(\dfrac{y} { x})}[/tex]
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Write equivalent fractions for 5/12,1/2 and 5/6 using the least common denominator.
We have the following response after answering the given question: Hence, the comparable fractions with 12 as the denominator are: 5/12= 60/144 and 1/2 and 5/6 = 10/12
What is the equation?
In a mathematical equation, the equals sign (=), which connects two claims and denotes equality, is utilized. In algebra, an equation is a mathematical statement that proves the equality of two mathematical expressions. For instance, in equation 3x + 5 = 14, the equal sign separates the numbers by a space. Mathematical expressions can be used to describe the relationship between the two sentences on either side of a letter. The logo and the particular piece of software frequently correspond. like, for instance, 2x - 4 = 2.
2 x 2 x 3 is the prime factorization of 12.
2 x 1 is the prime factorization of the number 2.
Two by three is the prime factorization of six.
The LCD is the sum of all the prime factors with the largest powers, giving us 2 × 2 × 3
5/12 = 5/(12 * 1) = 5/12 * 12/12 = 60/144
1/2 = 1/2 * 6/6 = 6/12
5/6 = 5/6 * 2/2 = 10/12
Hence, the comparable fractions with 12 as the denominator are:
5/12 = 60/144
1/2 = 6/12
5/6 = 10/12
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The base of a triangular prism is a right triangle with a base of 10 inches, a height of 24 inches, and a third side length of 26 inches. The height of the prism is 20 inches. Find the surface area of the prism.
The surface area of the prism is 840 square inches.
What is Prism?
A prism is a three-dimensional geometric shape that has two identical parallel bases and straight sides that connect the bases. The sides of a prism are typically rectangular, but can also be triangular or other polygonal shapes.
To find the surface area of the triangular prism, we need to find the area of the two triangular bases and the three rectangular faces.
Area of the triangular base:
The base is a right triangle with base 10 inches and height 24 inches. Therefore, the area of the base is:
(1/2) x base x height = (1/2) x 10 x 24 = 120 square inches.
Area of the rectangular faces:
The rectangular faces are all congruent, with dimensions of 10 inches by 20 inches. Therefore, the area of each rectangular face is:
length x width = 10 x 20 = 200 square inches.
There are three rectangular faces, so the total area of the rectangular faces is:
3 x 200 = 600 square inches.
Total surface area:
The total surface area of the prism is the sum of the areas of the two triangular bases and the three rectangular faces:
Total surface area = 2 x area of triangular base + 3 x area of rectangular face
= 2 x 120 + 3 x 200
= 240 + 600
= 840 square inches.
Therefore, the surface area of the prism is 840 square inches.
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(Please answer quickly, giving brainliest when two people answer!!)Which graph represents the inequality 2.5 is less than the product of −0.5 and a number?
number line with open circle on point 0.2 and arrow shaded to the left
number line with open circle on point negative 5 and arrow shaded to the left
number line with open circle on point negative 0.2 and arrow shaded to the right
number line with open circle on point negative 5 and arrow shaded to the right
The graph representing the inequality 2.5 is less than the product of −0.5 and a number is number line with open circle on point negative 5 and arrow shaded to the left.
What is Inequalities?Inequalities are defined as those expressions which are connected by inequality signs like >, <, ≤, ≥ and ≠.
Given inequality is,
2.5 is less than the product of −0.5 and a number.
2.5 < -0.5x
We have to isolate x on one side.
Dividing both sides by -0.5,
-5 > x
The inequality sign changes when a negative number is divided.
Or x < -5
So the solutions of the inequality are all the numbers less than -5.
So the graph of the inequality will be a number line where an open circle is at -5, since the point -5 is not included.
Since the solutions are less than -5, arrow is shaded to the left.
Hence the second option is the correct one.
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Researchers studied a random sample of high school students who participated in interscholastic athletics to learn about the risk of lower-extremity injuries (anywhere between hip and toe) for interscholastic athletes. Of 997 participants in girls' soccer, 79 experienced lower-extremity injuries. Of 1,664 participants in boys' soccer, 156 experienced lower-extremity injuries. (a) Write null and alternative hypotheses about sex and the risk of a lower-extremity Injury while playing interscholastic soccer. Null hypothesis: Sex and risk of a lower-extremity injury in interscholastic soccer are related variables. Alternative hypothesis: Sex and risk of a lower-extremity Injury in interscholastic soccer are not related variables. Null hypothesis: Sex and risk of a lower extremity injury in interscholastic soccer are explanatory variables. Alternative hypothesis: Sex and risk of a lower-extremity injury in interscholastic soccer are not explanatory variables. Null hypothesis: Sex and risk of a lower extremity injury in interscholastic soccer are not explanatory variables. Alternative hypothesis: Sex and risk of a lower-extremity injury in interscholastic soccer are explanatory variables. Null hypothesis: There is a weak relationship between sex and risk of a lower-extremity injury in interscholastic soccer. Alternative hypothesis: There is a strong relationship between sex and risk of a lower-extremity injury in interscholastic soccer Null hypothesis: Sex and risk of a lower-extremity injury in interscholastic soccer are not related variables. Alternative hypothesis: Sex and risk of a lower-extremity injury in interscholastic soccer are related variables. (b) For these data, the value of the chi-square statistic is 1. 63, and the p-value for the chi-square test is 0. 202. Based on these results, state a conclusion about the two variables in this situation and explain how you came to this conclusion. The p-value is greater than the 1. 63 X standard for significance, so there is not sufficient evidence to be able to conclude that the variables are related. (c) For each sex separately, calculate the percent of participants who had a lower-extremity injury. (Round your answers to one decimal place. ) girls 7. 9 % boys 9. 4 % Explain how the difference between these percentages is consistent with the conclusion you stated in part (b). These percentages are fairly similar , which suggests that sex and risk of a lower-extremity injury in interscholastic soccer are not related
a) Null hypothesis: Sex and risk of a lower-extremity injury in interscholastic soccer are not related variables. Alternative hypothesis: Sex and risk of a lower-extremity injury in interscholastic soccer are related variables. So the option E is correct.
b) There is insufficient information to draw the conclusion that the variables are connected even though the value is greater than the 0.05 threshold for significance.
c) The difference between these percentage are fairly similar which suggests that sex and risk of lower-extremity Injury in interscholastic soccer are not related.
a) The null and alternative hypotheses about sex and the risk of a lower-extremity Injury while playing interscholastic soccer is:
Null hypothesis: Sex and lower-extremity injury risk in interscholastic soccer are unrelated factors. Alternative hypothesis: sex and the likelihood of sustaining a lower-extremity injury in collegiate soccer are associated variables.
So the option E is correct.
b) The conclusion is that there is no significant relationship between the gender of the athlete and the risk of lower-extremity injuries. This conclusion is based on the fact that the chi-square statistic (1.63) and the corresponding p-value (0.202) are both greater than the 1.63 X standard for significance. This indicates that there is not enough evidence to show that the variables are related.
c) Of 997 participants in girls' soccer, 79 experienced lower-extremity injuries. Of 1,664 participants in boys' soccer, 156 experienced lower-extremity injuries.
Girls = 79/997 × 100 = 7.92%
Boys = 156/1664 × 100 = 9.38%
The difference between the two percentages is consistent with the conclusion that there is no significant relationship between the gender of the athlete and the risk of lower-extremity injuries because the difference between the two percentages is small.
This indicates that the risk of lower-extremity injuries is relatively similar for both boys and girls, which is consistent with the conclusion that there is no significant relationship between gender and the risk of lower-extremity injuries.
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The complete question is:
Researchers studied a random sample of high school students who participated in interscholastic athletics to learn about the risk of lower-extremity injuries (anywhere between hip and toe) for interscholastic athletes. Of 997 participants in girls' soccer, 79 experienced lower-extremity injuries. Of 1,664 participants in boys' soccer, 156 experienced lower-extremity injuries.
(a) Write null and alternative hypotheses about sex and the risk of a lower-extremity Injury while playing interscholastic soccer.
A. Null hypothesis: Sex and risk of a lower-extremity injury in interscholastic soccer are related variables. Alternative hypothesis: Sex and risk of a lower-extremity Injury in interscholastic soccer are not related variables.
B. Null hypothesis: Sex and risk of a lower extremity injury in interscholastic soccer are explanatory variables. Alternative hypothesis: Sex and risk of a lower-extremity injury in interscholastic soccer are not explanatory variables.
C. Null hypothesis: Sex and risk of a lower extremity injury in interscholastic soccer are not explanatory variables. Alternative hypothesis: Sex and risk of a lower-extremity injury in interscholastic soccer are explanatory variables.
D. Null hypothesis: There is a weak relationship between sex and risk of a lower-extremity injury in interscholastic soccer. Alternative hypothesis: There is a strong relationship between sex and risk of a lower-extremity injury in interscholastic soccer
E. Null hypothesis: Sex and risk of a lower-extremity injury in interscholastic soccer are not related variables. Alternative hypothesis: Sex and risk of a lower-extremity injury in interscholastic soccer are related variables.
(b) For these data, the value of the chi-square statistic is 1. 63, and the p-value for the chi-square test is 0. 202. Based on these results, state a conclusion about the two variables in this situation and explain how you came to this conclusion. The p-value is greater than the 1. 63 X standard for significance, so there is not sufficient evidence to be able to conclude that the variables are related.
(c) For each sex separately, calculate the percent of participants who had a lower-extremity injury. (Round your answers to one decimal place. ) girls 7.9% boys 9.4%. Explain how the difference between these percentages is consistent with the conclusion you stated in part (b). These percentages are fairly similar , which suggests that sex and risk of a lower-extremity injury in interscholastic soccer are not related
15 over 25 in simplest form
Answer:
3/5
Step-by-step explanation:
The greatest common factor (GCF) of the numerator (15) and the denominator (25) is 5
GCF(15,25) = 5
15/25=
15 ÷ 25 ÷ 25 ÷ 5= 3/5
O POLYNOMIALS AND FACTORING Factoring out a constant before factoring Factor completely. 4v^(2)-16v-48
The completely factored form of the given polynomial is 4(v-6)(v+2).
To factor the given polynomial, 4v^(2)-16v-48, we first need to factor out the constant, which is 4. This will give us:
4(v^(2)-4v-12)
Now, we can use the factoring method to factor the remaining polynomial, v^(2)-4v-12. We need to find two numbers that multiply to -12 and add to -4. These numbers are -6 and 2. So, we can write the polynomial as:
4(v-6)(v+2)
Therefore, the completely factored form of the given polynomial is 4(v-6)(v+2).
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Calculate the present value. (Round your answer to two decimal places.). A=$35,000,r=15% compounded quarterly, t=10 years. Ineedarim? Viewing Saved Work Revert to Last Response
The present value is $7,307.31.
To calculate the present value, we can use the formula: PV = A / (1 + r/n)^(n*t) where PV is the present value, A is the future value, r is the annual interest rate, n is the number of compounding periods per year, and t is the number of years.
In this case, we have A = $35,000, r = 15% = 0.15, n = 4 (since it is compounded quarterly), and t = 10.
Plugging these values into the formula, we get:
PV = $35,000 / (1 + 0.15/4)^(4*10)
PV = $35,000 / (1.0375)^40
PV = $35,000 / 4.79
PV = $7,307.31
Therefore, the present value is $7,307.31.
I ignored the "Ineedarim?" part of the question as it is irrelevant to the calculation.
$7,307.31.
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How long will it take $3,000 to grow to $20,000 if it is invested at 4% compounded monthly? years (Round to the nearest tenth of a year.) If $8000 is invested at 8% compounded continuously, what is the amount 8 years?
If $8000 is invested at 8% compounded continuously, the amount 8 years is $12,904.95.
To find out how long it will take $3,000 to grow to $20,000 if it is invested at 4% compounded monthly, we can use the formula A=P(1+r/n)^(nt), where A is the final amount, P is the principal amount, r is the annual interest rate, n is the number of times interest is compounded per year, and t is the number of years. Plugging in the given values, we get:
20,000=3,000(1+0.04/12)^(12t)
Dividing both sides by 3,000, we get:
6.66667=(1+0.04/12)^(12t)
Taking the natural logarithm of both sides, we get:
ln(6.66667)=12t*ln(1+0.04/12)
Solving for t, we get:
t=ln(6.66667)/(12*ln(1+0.04/12))
t=41.2 years
So it will take approximately 41.2 years for $3,000 to grow to $20,000 if it is invested at 4% compounded monthly.
To find out the amount of $8,000 invested at 8% compounded continuously for 8 years, we can use the formula A=Pe^(rt), where A is the final amount, P is the principal amount, r is the annual interest rate, and t is the number of years. Plugging in the given values, we get:
A=8,000e^⁰ ⁶⁴
A=12,904.95
So the amount of $8,000 invested at 8% compounded continuously for 8 years is $12,904.95.
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Expand open parentheses 10 a minus b close parentheses open parentheses 10 a plus b close parentheses.
The expanded form of (10a - b)(10a + b) is 100a^2 - b^2.
To expand the given expression, we need to distribute the first term inside the parentheses to the second term inside the parentheses. This can be done by multiplying each term inside the first parentheses by each term inside the second parentheses. Here are the steps:
1. 10a * 10a = 100a^2
2. 10a * b = 10ab
3. -b * 10a = -10ab
4. -b * b = -b^2
Now, we can combine like terms and simplify the expression:
100a^2 + 10ab - 10ab - b^2 = 100a^2 - b^2
So, the final answer is:
100a^2 - b^2
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To complete the sentence, we need to choose the expression that correctly represents the number of books owned by the university library. The expression given in parentheses is "nine million three hundred thirty-nine thousand five hundred sixty" or "9,339,560".
To write this number in words, we can break it down into its different place values. The digit in the millions place is 9, so we can say "nine million."The digit in the hundred thousands place is 3, so we can say "three hundred thousand." The digit in the ten thousands place is 3, so we can say "thirty thousand."The digit in the thousands place is 9, so we can say "nine thousand." The digit in the hundreds place is 5, so we can say "five hundred.
"The digit in the tens place is 6, so we can say "sixty." The digit in the ones place is 0, so we can say "zero."Putting it all together, we can say that the university library owns more than "nine million, three hundred thirty-nine thousand, five hundred sixty" books.
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7/6 + 2/3y = 4/3 how i can solve this equation
Using basic arithmetic operation, the solution to the equation 7/6 + 2/3y = 4/3 is y = 3/4.
What is the basic arithmetic operation?
The four basic mathematical operations are Addition, subtraction, multiplication, and division.
To solve this equation for y, we need to isolate the variable y on one side of the equation. We can do this by performing algebraic operations to simplify the equation. Here are the steps:
Subtract 7/6 from both sides:
7/6 + 2/3y - 7/6 = 4/3 - 7/6
2/3y = 1/2
Multiply both sides by the reciprocal of 2/3:
(3/2)(2/3y) = (3/2)(1/2)
y = 3/4
Hence, the solution to the equation 7/6 + 2/3y = 4/3 is y = 3/4.
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