The two cars are 10 miles apart, measured in a straight line.
We can use the Pythagorean theorem to find the distance between the two cars. The Pythagorean theorem states that in a right triangle, the square of the length of the hypotenuse (the longest side) is equal to the sum of the squares of the lengths of the other two sides.
Let's imagine that the cars have traveled for some time, forming a right triangle where the distance between them is the hypotenuse. The northbound car has traveled 6 miles, which corresponds to the length of one of the legs of the triangle. The eastbound car has traveled 8 miles, which corresponds to the length of the other leg of the triangle. Therefore, the distance between the two cars is
distance = √(6² + 8²) = √(36 + 64) = √100 = 10 miles
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What is the vertex of y = -2x² - 4x - 5?
(-1, 3)
(-2,-3)
(-1,-3)
(1, −1)
Answer:
To find the vertex of the quadratic function y = -2x² - 4x - 5, we can use the formula:
x = -b/2a
where a = -2 and b = -4 are the coefficients of the quadratic term and the linear term, respectively.
x = -(-4)/(2*(-2)) = -(-4)/(-4) = 1
To find the y-coordinate of the vertex, we substitute x = 1 in the function:
y = -2(1)² - 4(1) - 5 = -2 - 4 - 5 = -11
Therefore, the vertex of the quadratic function is (1, -11).
Answer:
(-1, -3)
Step-by-step explanation:
HURRY 20 POINTS HELP!!!!
Answer:
n-2x180
Step-by-step explanation:
to be abke to find it wouldnt you use n-2x180
If the dartboard has a diameter of 14 inches and each number occupies 1/20 of the board, how much space does a single number occupy in square inches?
Answer:
Step-by-step explanation:
If the dartboard has a diameter of 14 inches, then the radius is 7 inches. The area of the dartboard is given by the formula for the area of a circle: A = pi x r^2, where pi is approximately 3.14 and r is the radius.
A = 3.14 x 7^2 = 153.86 square inches (rounded to two decimal places)
Each number occupies 1/20 of the board, so we need to divide the total area by 20 to get the area occupied by a single number:
153.86 / 20 = 7.69 square inches (rounded to two decimal places)
Therefore, a single number occupies approximately 7.69 square inches of space on the dartboard.
The following shows a graph of y = x^2+ 5
Can we use this graph to find the solutions of 0 = c^2 + 5? Why or why not?
There are no real solutions to the equation 0 = x² + 5, and the graph of y = x² + 5 does not intersect the x-axis.
How to find the solutions of y = x²+ 5.To find the solutions of 0 = x² + 5, we need to find the values of x that make the equation true. One way to do this is by solving the equation algebraically using methods like factoring, completing the square, or using the quadratic formula.
We cannot use the graph of y = x² + 5 directly to find the solutions of 0 = x² + 5, since the graph shows the values of y that correspond to different values of x, not the values of x that satisfy the equation 0 = x² + 5. However, we can use the graph to help us visualize the solution to the equation.
Since 0 = x² + 5 is equivalent to x² = -5, we know that the solutions to the equation must be imaginary numbers, since the square of any real number is always non-negative. Therefore, there are no real solutions to the equation 0 = x² + 5, and the graph of y = x² + 5 does not intersect the x-axis.
In summary, we cannot use the graph of y = x² + 5 directly to find the solutions of 0 = x² + 5, but we can use the graph to see that the equation has no real solutions.
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according to the bureau of justice statistics, 10% of persons age 16 or older had been victims of identity theft during the prior 12 months in 2016. what is the minimal sample size of a random sample of persons age 16 or older to generate a normal distribution approximation?
According to the bureau of justice statistics, 10% of persons age 16 or older had been victims of identity theft during the prior 12 months in 2016. 200 is the minimal sample size of a random sample of persons age 16 or older to generate a normal distribution approximation.
In order to generate a normal distribution approximation from a sample of persons aged 16 or older, a minimum sample size of 200 individuals would be necessary. This number is based on the assumption that 10% of persons aged 16 or older had been victims of identity theft in 2016, according to the Bureau of Justice Statistics.
The normal distribution approximation of a population is determined by obtaining a random sample of the population, and using it to approximate the probability distribution of a given variable. The larger the sample size, the more accurate the approximation will be, so a sample size of 200 individuals is the minimum required to generate a normal distribution approximation.
In order to obtain a random sample, the population must be divided into subgroups and a certain number of individuals from each group should be selected. A larger sample size will be more representative of the population and will improve the accuracy of the approximation.
In conclusion, a minimum sample size of 200 individuals would be necessary in order to generate a normal distribution approximation of persons aged 16 or older in 2016, based on the Bureau of Justice Statistics finding that 10% of persons aged 16 or older had been victims of identity theft during the prior 12 months in 2016.
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The cost for grapes is $0.90 per pound. Sam bought 5.2
pounds. How much did Sam spend?
Answer:
4.68 dollars.
Step-by-step explanation:
We are looking for how much money Sam spent on grapes. We know that each pound is 90 cents. We also know that Sam bought 5.2 pounds of grapes. We need to find how much he spent.
Our equation would be like this:
0.9 * 5.2 = x
To find X, we multiply 0.9 and 5.2.
4.68 = x
We now know that Sam spent 4.68 dollars on grapes.
A right triangle has legs measuring 11 in. and 18 in.
What is the length of the hypotenuse?
Round to the nearest tenth.
Answer:
the length of the hypotenuse is approximately 21.1 inches, rounded to the nearest tenth.
Step-by-step explanation:
Mrs. Garcia is ordering pizza for students in the Homework Club. A large two-topping pizza is 20% off the regular price of $15. Mrs. Garcia wants to know the sale price. Which equation can be used to find the sale price, s, of the pizza
s = 0.8(15) s = 0.1(15) S = 0.115 S=0.8 15
Regular Price 100% $15
Sale Price 80% $ ?
Discount 20%
The equation that can be used to find the sale price, s, of the pizza is S = 0.8(15).
What is sale price?It is the final amount paid for a product or service and is often lower than the original asking price.
This equation uses the percentage discount of 20%, which can be represented as 0.8, to find the sale price.
To calculate the sale price, the equation multiplies the regular price of $15 by the discount, 0.8.
0.8*15 =12
Therefore, the sale price of the pizza is $12.
The other equations are not correct because they do not take into account the percentage discount of 20%.
S = 0.1(15) does not consider the discount of 20%, as it is multiplying the regular price of $15 by 0.1, which is equivalent to 10%, not 20%.
Similarly, S = 0.115 is incorrect because it is multiplying the regular price of $15 by 1.15, which is equivalent to 115%, not 20%.
Lastly, S=0.8 15 is incorrect because it is not multiplying the regular price of $15 by the discount of 20%, which is 0.8.
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DUE TOMORROW PLEASE HELP WELL WRITTEN ANSWERS ONLY!!!!!!
Sketch a graph of the function f given by f(Θ) = 2 sin(Θ)
The graph of the function f given by f(Θ) = 2 sin(Θ) is attached below the sum,
Use the form
a sin(bx−c)+d to find the variables used to find the amplitude, period, phase shift, and vertical shift.
a=2
b=1
c=0
d=0
Find the amplitude |a|.
Amplitude: 2
Find the period of 2 sin(x).
Its 2π.
List the properties of the trigonometric function.
Amplitude: 2
Period: 2π
Phase Shift: None
Vertical Shift: None
x y
0 0
[tex]\frac{\pi }{2}[/tex] 2
[tex]\pi[/tex] 0
[tex]\frac{3\pi }{2}[/tex] -2
[tex]2\pi[/tex] 0
Then we can plot the according to the given function f(Θ) = 2 sin(Θ).
Hence the graph is attached below.
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A rate with a denominator of 1 is call a
Answer: whole number
Step-by-step explanation:such as 9/1=9 6/1=6
operating at an 85 percent learning rate, the first unit took 72 hours to produce. a) determine how long the 32nd unit will take. (5 points) b) plot the learning curve. (5 points)
a) 32nd unit will take approximately 20.4 hours to produce b) T2 = 59.4 and graph of curve can be plotted similarly for T4, T8, T16
a) Using the learning curve formula, we can estimate how long it will take to make the 32nd unit:
[tex]Tn = T1 * n^k[/tex]
where n: total number of units created, Tn: time it takes to produce the nth unit, T1 is the time it takes to make the first unit, and k is the rate of learning.
T1 is assumed to be 72 hours, and k is specified to be [tex]log(0.85)/log(2)-0.278[/tex].
With the use of these numbers, we may determine T32 as follows:
[tex]T32 = T1 * 32^k \sT32 = 72 * 32^(-0.278) (-0.278)[/tex]
20.4 hours in T32
Hence, it will take about 20.4 hours to generate the 32nd unit.
b) The time it takes to create each unit for a variety of values of n can be determined using the same technique as previously in order to illustrate the learning curve. Therefore, using n as the x-axis and Tn as the y-axis, we may plot these numbers on a graph.
As an illustration, we can compute T2 as follows:
[tex]T2 = T1 * 2^k \sT2 = 72 * 2^(-0.278) (-0.278)[/tex]
59.4 hours in T2.
Similar calculations can be made for T4, T8, T16, and so forth. Then, we may graph these numbers to get a learning curve.
The resulting learning curve will demonstrate how, as production volume grows, each unit's production time gets smaller until it approaches an asymptote. The learning rate will determine how steep the curve is. A steeper curve indicates a faster rate of improvement, and a higher learning rate will produce it. In contrast, a flatter curve indicates a slower rate of improvement than a higher learning rate.
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please help its due tmr
Answer: 106.81 in
Step-by-step explanation:
c = 2πr
r = 17 in
2π(17) = 106.8141502
I'm not sure how you want it rounded, but it is commonly rounded by the hundredths decimal.
Answer:
The formula for the circumference of a circle is C = 2πr, where r is the radius of the circle and π (pi) is a mathematical constant approximately equal to 3.14159.
If the radius of the circle is 17 inches, then we can substitute this value into the formula:
C = 2πr
C = 2π(17)
C = 34π
So the circumference of the circle is 34π inches, which is approximately 106.81 inches when rounded to two decimal places.
ray fills his car with 45 liters of gasoline every week how many kiloleters of gasoline does his car use in 2 years?
Ray's car will use 4.68 kiloliters of gasoline and travel 39.54 kilometers
Every week, Ray fills his car with 45 liters of gasoline. To calculate the total amount of gasoline used by Ray's car over two years, we must first convert liters to kiloliters. One kiloliter is equal to 1,000 liters, so 45 liters is equal to 0.045 kiloliters. Therefore, in two years, Ray's car will use 0.045 kiloliters x 104 weeks (2 years x 52 weeks per year) = 4.68 kiloliters of gasoline.
To calculate how many kilometers the car will travel with 4.68 kiloliters of gasoline, we need to know the car's fuel efficiency rating. Assuming the car has an average fuel efficiency rating of 8.5 kilometers per liter, we can calculate that the car will travel 8.5 kilometers x 4.68 kiloliters = 39.54 kilometers with 4.68 kiloliters of gasoline.
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randomly selected students were asked whether they preferred vanilla ice cream or chocolate ice cream. 58% of the students said they preferred vanilla ice cream with a 5% margin of error. how many students were surveyed?
163.79 students were surveyed.
The survey asked randomly selected students whether they preferred vanilla ice cream or chocolate ice cream. 58% of the students said they preferred vanilla ice cream, with a 5% margin of error. To calculate the total number of students surveyed, we can use the following formula:
Number of Students Surveyed = (100 - Margin of Error) ÷ (Percentage that Prefer Vanilla/100)
In this case, we get:
Number of Students Surveyed = (100 - 5) ÷ (58/100)
Number of Students Surveyed = 95 ÷ 0.58
Number of Students Surveyed = 163.79
Therefore, 163.79 students were surveyed.
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wendy can build a fort in 12 hours, al can build the same fort in 8 hours. if wendy and al work together on the fort, how long will it take the two to complete the work? if needed, keep your answer as a fraction. no decimal answers will be accepted.
If wendy can build a fort in 12 hours, al can build the same fort in 8 hours, the time taken by Wendy and Al working together to build the fort is 24/5 hours
To solve this problem, we need to use the concept of work and time. Let's assume that the fort is the unit of work that needs to be completed, and the time required to complete this unit of work is the time taken by Wendy and Al working together.
Let's denote the time taken by Wendy to build the fort as TW and the time taken by Al to build the fort as TA. From the problem, we know that TW = 12 hours and TA = 8 hours.
Let's also denote the time taken by Wendy and Al working together to build the fort as T. We can use the formula:
Work = Rate x Time
where the rate is the amount of work done per unit time.
Let's assume that Wendy's rate of work is RW, and Al's rate of work is RA. Then the rate of work of both of them working together is the sum of their individual rates of work:
RW + RA = 1/T
We can also express their individual rates of work as the inverse of the time taken by them to complete the work:
RW = 1/TW
RA = 1/TA
Substituting these values in the above equation, we get:
1/TW + 1/TA = 1/T
Substituting the given values of TW and TA, we get:
1/12 + 1/8 = 1/T
Simplifying this equation, we get:
5/24 = 1/T
T = 24/5 hours
In other words, it would take them 4 and 4/5 hours to complete the work if they worked together.
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Eight avocados cost $4. How much is 1 avocaodo?
The cost of one avacado is equal to 0.5$ and it is found by the use of division method.
One of the four fundamental mathematical operations, along with addition, subtraction, and multiplication, is division. an a person who knows what I mean by just calling it what they do when they just want to go to the store. Just call it what they call it, whatever ites. Really, whatever it is, these are the same people. It is a mathematical operation used for equal distribution and equal grouping.
One of the fundamental mathematical operations is division, which involves breaking a larger number into smaller groups with the same number of items.
We are given the cost of 8 avacados= $4.
The cost of 1 avacado= 1/8 * 4 = 1/2 = 0.5.
Hence, the cost of one avacado is equal to $0.5.
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who in 1706 first gave the greek letter pi its current mathematical definition
The mathematician William Jones is credited with first using the Greek letter π
The mathematician William Jones is credited with first using the Greek letter π to represent the ratio of a circle's circumference to its diameter in a 1706 publication. He wrote, "there is no other more proper than Pi," and thus the symbol caught on among mathematicians. However, it's important to note that the concept of pi and its calculation had been around for thousands of years prior to Jones' use of the symbol.
Ancient Egyptian, Babylonian, and Indian mathematicians all had methods for approximating pi, and Archimedes famously used a geometric method to calculate it to a high degree of accuracy in the third century BCE.
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Kolton is working through a setup for his new video that he wants to shoot and send to his friends. He's obsessed with trains and has so many of the "mini" trains that he thought it would be fun to set the trains up as if they were in seats at a stadium watching the big trains. (think theater seating) He knows that he wants to set it up so that there are 5 more trains in the next row for each of the next rows that he sets up and that the very first row in the front can only have 12 trains to start. Kolton asked me to help him come up with an equation to figure out how many mini trains he would need in each of the rows. Tell me what this equation would be describing the individual parts and then show all steps from start to finish for using that equation to solve for how many trains will be in row 15.
SHOW ALL MATH WORK AND EXPLANATIONS FOR THIS FROM START TO FINISH! IT'S A 10 POINT PROBLEM!
Answer:
The equation that describes the number of mini trains Kolton would need in each row would be:
n = 12 + 5(r - 1)
where n is the number of mini trains in a given row, and r is the number of the row.
To find the number of mini trains in row 15, we simply substitute r = 15 into the equation and solve for n:
n = 12 + 5(15 - 1)
n = 12 + 5(14)
n = 12 + 70
n = 82
Therefore, Kolton would need 82 mini trains in the 15th row.
square a has a perimeter of $24$ cm. square b has an area equal to one-fourth the area of square a. what is the perimeter of square b?
For square a of perimeter 24 cm and square b has an area equal to one-fourth the area of the square a, the perimeter of square b is 12 cm.
Given that a square has a perimeter of 24 cm. And another square b has an area equal to one-fourth of the area of square a. To find the perimeter of square b, we need to find the length of the side of square b using the area of square
Area of the square a = side² of the square a
The perimeter of the square a = 4 × side of the square a
Given that, Perimeter of square a = 24 cm⇒ 4 × side of square a = 24 cm⇒ side of square a = 24 / 4 cm⇒ side of square a = 6 cm.
Area of square b = 1/4 × Area of square a = 1/4 × side² of square a= 1/4 × 6² cm²= 9 cm²
Side of square b = √9 cm = 3 cm
Perimeter of square b = 4 × 3 cm = 12 cm
Therefore, the perimeter of square b is 12 cm.
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In QRS, s = 3.1 cm, m 10th of a centimeter.
The value of q according to the given triangle measures is 3 cm.
What is Sine Rule for Traingles?
For any general triangle ABC with 3 angles A, B, and C and 3 sides a, b, and c corresponding to their opposite angle, the formula of sine is always fulfilled :
[tex]\frac{a}{sin A} = \frac{b}{sin B} =\frac{c}{sin C}[/tex]
Here, we are given that :
s i.e. Side QR = 3.1 cm
Angle Q = 62 degree
Angle R = 114 degree
Firstly we need to find the third angle S using the sum of triangle angles property :
[tex]AngleQ + AngleR + AngleS = 180\\[/tex]
[tex]Angle S = 180 - 114 - 62[/tex]
[tex]= 180 - 176[/tex]
[tex]= 4[/tex]
Now, we apply the sine formula for angles Q and S :
[tex]\frac{q}{sinQ} = \frac{s}{sinS}[/tex]
[tex]q = (sinQ) * s / (sinS)[/tex]
[tex]= ( 3.1 * sin(62)) / sin(4)[/tex]
[tex]= ( 3.1 * (-0.739)) / (-0.756)[/tex]
[tex]= 3.03[/tex]
Hence, the length of side RS i.e. q to its nearest 10th is 3 cm.
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A square has a perimeter of 32. What is the length of each side?
PLEASE HELP PLEASE HELP HELP HELP HELP!!!!!!!!!!!!!!!!!!
The measure of angle A is 25°, where the value of x = 12.
What is triangle?Three vertices, three sides, and three angles make up a clοsed triangle.
PQR serves as the symbοl fοr a triangle with the vertices P, Q, and R. Triangle-shaped items are mοst cοmmοnly fοund in sandwiches and signbοards.
A triangle cοnsists οf numerοus parts. There are 3 angles, 3 vertices, and 3 sides tο it.
A triangle has three sides, three internal angles, and three vertices.
The three inner angles οf a triangle can never add up tο mοre than 180 degrees, which is knοwn as the "angle sum prοperty" οf triangles.
Take nοte οf the triangle PQR in the illustratiοn abοve, where the sum οf the angles P, Q, and R is 180 degrees i.e.
90° + (2x + 1)° + (5x + 5)° = 180°
Solving for x
⇒ (2x + 1)° + (5x + 5)° = 180° - 90°
⇒ (2x + 1)° + (5x + 5)° = 90°
⇒ 7x + 6 = 90
⇒ 7x = 90 - 6
⇒ 7x = 84
⇒ x = 84/7
⇒ x = 12
Now, m∠A = (2x + 1)°
m∠A = (2(12) + 1)°
m∠A = 24 + 1
m∠A = 25°
Thus, The measure of angle A is 25°.
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using appropriate properties find -2/8×2/8+2/8-2/8×2/8
Answer:
To solve this expression, we need to follow the order of operations: parentheses, exponents, multiplication and division (performed left to right), and addition and subtraction (performed left to right).
There are no parentheses or exponents, so we can simplify multiplication and division first:
-2/8 × 2/8 + 2/8 - 2/8 × 2/8 = (-2 × 2)/(8 × 8) + 2/8 - (2 × 2)/(8 × 8)
= -4/64 + 2/8 - 4/64
= (-4 + 16 - 4)/64
= 8/64
= 1/8
Therefore, -2/8 × 2/8 + 2/8 - 2/8 × 2/8 = 1/8.
Jason has a block of clay that is made up of two rectangular pieces of
different colors. Find the volume of the block of clay.
The measurements of the two clay blocks are:
6 cm
4 cm
3 cm
5 cm
Answer: 132 cubic centimeters
Step-by-step explanation:
To find the volume of the block of clay, we need to add the volumes of the two rectangular pieces.
The volume of a rectangular solid can be found by multiplying its length, width, and height. Let's call the first rectangular piece A and the second rectangular piece B. Then the dimensions of A are 6 cm (length), 4 cm (width), and 3 cm (height), and the dimensions of B are 5 cm (length), 4 cm (width), and 3 cm (height).
The volume of A is:
Volume of A = length x width x height = 6 cm x 4 cm x 3 cm = 72 cubic centimeters
The volume of B is:
Volume of B = length x width x height = 5 cm x 4 cm x 3 cm = 60 cubic centimeters
So the total volume of the block of clay is:
Volume of block = Volume of A + Volume of B = 72 cubic centimeters + 60 cubic centimeters = 132 cubic centimeters
Therefore, the volume of the block of clay is 132 cubic centimeters.
14. Divide 30 chocolates between Rosy and Fathima in the ratio 2:3. Ans: Rosy's share Fathima's share
Rosy will receive 12 chocolates and Fathima will receive 18 chocolates.
What is Rosy's and Fathima's share?To divide 30 chocolates between Rosy and Fathima in the ratio 2:3.
We need to divide the total into 2 + 3 = 5 equal parts (each representing one part of the ratio).
Each part will be equal to:
30 chocolates ÷ 5 = 6 chocolates
Now,
Rosy will receive 2 parts which is:
2 × 6 chocolates
= 12 chocolates.
Fathima will receive 3 parts, which is:
3 × 6 chocolates
= 18 chocolates.
Therefore, the share of Rosy and Fatima are 12 and 18 chocolates respectively.
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nineteen students are eligible to play doubles tennis. what is the maximum number of different 2-person teams possible?
By permutation and combination, Maximum 171 number of different 2 - person teams are possible.
Provide an example of permutation and combination?
An arrangement of things in a specific order is referred to as a permutation. In this arrangement, the components or components of sets are organized in a linear or sequential order.
As an illustration, set A=1,6 has the permutation 2, which is 1,6,1. Permutations include the arrangement of individuals, digits, numbers, alphabets, letters, and colors. Combinations include things like choosing a menu, cuisine, clothing, a subject, and a team.
Total number of ways to choose different 2 person out of 19 person.
= ¹⁹C₂
= 19!/2! (19 - 2)!
= 19!/2! 17!
= 19 * 18 * 17!/2 * 1 * 17!
= 19 * 7
= 171
Hence, maximum 171 number of different 2 - person teams are possible.
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A man loses 10 percent by selling his watch for 450 find the cost price of the watch
If a man loses 10 percent by selling his watch for 450 then the cost price of the watch would be 500.
Let's assume the cost price of a watch is 100.
So, after selling at a loss of 10 percent, the selling price of the watch is 90.
By comparing the assumed selling price of the watch with the original selling price, 450/90 = 5.
So, the original selling price is 5 times the assumed selling price.
Thus original cost price should also be 5 times of assumed cost price, so the original cost price × 5 = 100 × 5 = 500.
Hence the original cost price of the watch is 500.
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Dr. Johnson just started an experiment. She will collect data for 4 days. How many hours is this?
Answer:
96 hours.
Step-by-step explanation:
There are 24 hours in a day, so multiply 24 hours x 4 days.
24x4=96.
A polygon has 5 sides. The interior angle measures are 99°, 113°, 106°, 113°, and x°. Find the value of x
The measure of the angle x of the polygon is 100 degrees if the polygon has 5 sides. The interior angle measures are 117°, 104°, 113°, 106°.
A polygon is a geometric figure with a finite number of sides in two dimensions. On the sides or edges of a polygon, straight line segments are joined and to end to form a closed shape. The vertices also known as corners, are the points where two lines segments meet and form an angle.
We know that the sum of the interior angles in a polygon is given by:-
180(n-2) here, n is 5.
therefore, 180(5-2) = 540° .
117°+104°+106°+x= 540°.
440°+x= 540°
x= 540°-440°
x= 100° .
Thus, the measure of the angle x is 100° .
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NEED HELP KNOW Of the 8760 hours in a year, one television was on for 438 hours. What percent is this?
8760 hours in a year, one television was on for 438 hours. 5% is the percentage of 8760 hours television was on.
What is the Percentage?The percentage is the a ratio in which the value of the whole (denominator) is always 100. For example, if Ram scored 40% marks in his math test, it means that he scored 40 marks out of 100. It is written as 40/100 in the fraction form and 40:100 in terms of ratio. Here "%" signifies the symbol of percentage and is read as "percent" or "percentage".
Total number of hours in a year=8760hrs
Television was on for=438hrs
percentage=438/8760 x 100 = 5
Therefore, 438hr is 5 percent of 8760hr.
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