The type of sampling used in each case are:
Statement A → Stratified random sampling.
Statement B → Cluster sampling
Statement C → Simple random sampling
Statement D → systematic sampling
How to find the type of statistics sampling?There are different ways that samples are classified such as:
1) Convenience sampling: This is where samples are drawn from a conveniently available pool.
2) Random Sampling: This is when we put all the options into a particular hat and drawn some of them.
3) Systematic Sampling: This is when every nth element is taken. For example, we want to survey something in the school, and then we interview every 10th person.
4) Cluster Sampling: This usually divides a population into groups, referred to as clusters, and each element in that cluster is surveyed.
5) Stratified Sampling: This will divide the population into groups. However, unlike cluster sampling, here, only some elements of the group are surveyed.
From the given problem:
Statement A is Stratified random sampling.
Statement B is Cluster sampling
Statement C is Simple random sampling
Statement D is systematic sampling
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what is the sum of the rational expression below x/x+1 + 6x/x+5
The sum of the rational expression as required to be determined in the task content is; (7x² + 11) / (x² + 6x + 5).
What is the sum of the given expression?It follows from the task content that the rational expression whose sum is to be determined is;
x / x+1 + 6x / x+5
Therefore, by using the LCM; (x + 1) (x + 5).
Therefore, the sum is as follows;
{x(x + 5) + 6x (x + 1)} / (x + 1) (x + 5).
= (7x² + 11) / (x² + 6x + 5)
Ultimately, the sum as required is; (7x² + 11) / (x² + 6x + 5).
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Answer:
[tex] \frac{x(7x + 11)}{(x + 1)(x + 5)} [/tex]
Step-by-step explanation:
[tex]1. \: \frac{x(x + 5) +6x(x + 1)}{(x + 1)(x + 5)} \\ 2. \: \frac{x(x + 5 + 6(x + 1))}{(x + 1)(x + 5)} \\ 3. \: \frac{x(x + 5 + 6x + 6)}{(x + 1)(x + 5)} \\ 4. \: \frac{x((x + 6x) + (5 + 6))}{(x + 1)(x + 5)} \\ 5. \: \frac{x(7x + 11)}{(x + 1)(x + 5)} [/tex]
PLEASE HELP DUE TODAY!!!
#of ice cream treats sold: Day 1=16, Day 2=19, Day 3=28, Day 4=27, Day 5=28, Day 6=36, Day 7=38, Day 8=41, Day 9=41, Day 10=48
#of coffee drinks sold: Day 1=55, Day 2=43, Day 3=51, Day 4=46, Day 5=32, Day 6=36, Day 7=43, Day 8=25, Day 9=10, Day 10=33
5. What is the slope of the line that best fits the data? Use mathematical reasoning and show work.
6. Interpret what the slope means in terms of the situation.
8. Write the equation of the line that best fits the data.
9. Using the equation of the line of best fit, estimate the number of coffee drinks sold on a day that 32 ice cream treats were sold. Write an explanation that justifies your conclusion.
The slope of the line that best suits the data is -0.1463.
slope = [tex]\sum (( x -\bar x )( y - \bar y )) / \sum ( x - \bar x ) ^2[/tex]
where x is the number of ice cream treats sold, y is the number of coffee drinks sold, x bar is the mean of the number of ice cream treats sold, and ȳ is the mean of the number of coffee drinks sold.
Using the given data, we find that:
[tex]\bar x =[/tex] (16 + 19 + 28 + 27 + 28 + 36 + 38 + 41 + 41 + 48) / 10 = 32.2
[tex]\bar y =[/tex] (55 + 43 + 51 + 46 + 32 + 36 + 43 + 25 + 10 + 33) / 10 = 36.4
Next, we calculate the terms needed for the formula:
[tex]\sum (( x - \bar x )( y - \bar y ))[/tex] = (16 - 32.2)(55 - 36.4) + (19 - 32.2)(43 - 36.4) + ... + (48 - 32.2)(33 - 36.4) = -686.6
[tex]\sum ( x - \bar x )^2[/tex] = (16 - 32.2)² + (19 - 32.2)² + ... + (48 - 32.2)² = 4690.6
Plugging these values into the formula, we get:
slope = [tex]\sum (( x - \bar x )( y - \bar y )) / \sum ( x - \bar x )^2[/tex] = -686.6 / 4690.6 = -0.1463
Therefore, the slope of the line that best fits the data is -0.1463.
Interpreting the slope in terms of the situation, we can say that for every additional ice cream treat sold, the number of coffee drinks sold decreases by an average of 0.1463.
To write the equation of the line that best fits the data, we use the slope-intercept form:
y = mx + b
where m is the slope and b is the y-intercept. We already know the value of m, so we just need to find b. To do this, we can use the mean values of x and y:
y = mx + b
36.4 = (-0.1463)(32.2) + b
b = 41.9
Therefore, the equation of the line that best fits the data is:
y = -0.1463x + 41.9
To estimate the number of coffee drinks sold on a day that 32 ice cream treats were sold using the equation of the line of best fit, we simply substitute x = 32 into the equation and solve for y:
y = -0.1463(32) + 41.9
y ≈ 36.9
So we can estimate that approximately 36.9 coffee drinks were sold on a day that 32 ice cream treats were sold. This conclusion is justified because we used the equation of the line that best fits the data to make the estimate, which takes into account the overall trend of the data and the relationship between the number of ice cream treats sold and the number of coffee drinks sold. However, it's important to note that this is only an estimate and there may be other factors that could affect the actual number of coffee drinks sold on a particular day.
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arturo earns 1,800 per month. he pays 600 a month on rent. what is the ratio of his rent to his monthly income
Answer:
1:3
Step-by-step explanation:
We Know
Arturo earns 1,800 per month.
He pays 600 a month on rent.
What is the ratio of his rent to his monthly income?
The ratio is
600:1800
Simplify by 600; we get the ratio
1:3
So, the ratio of his rent to his monthly income is 1:3
MATH! 20 points please solve with steps and explaining :P
What effect does replacing x with x+2 have on the graph of f(x)= |x-4|+2
Replacing x with x + 2 means that the graph of f(x) = |x - 4| will be translated 2 units left.
What is a translation?A translation happens when either a figure or a function is moved horizontally or vertically on the coordinate plane.
The four translation rules for functions are defined as follows:
Translation left a units: f(x + a).Translation right a units: f(x - a).Translation up a units: f(x) + a.Translation down a units: f(x) - a.The change from x to x + 2 means that we calculated f(x + 2), thus the graph is translated 2 units left.
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a plane travels at a rate of x + 150 miles per hour. what expression would represent the distance it can travel in 2x + 1 hours?
Answer:
Step-by-step explanation:
The distance that the plane can travel in 2x + 1 hours can be found by multiplying the plane's rate (x + 150 miles per hour) by the time (2x + 1 hours):
Distance = Rate × Time
Distance = (x + 150)(2x + 1)
Simplifying this expression, we can use the distributive property of multiplication:
Distance = 2x(x) + 2x(1) + 150(x) + 150(1)
Distance = 2x^2 + 2x + 150x + 150
Finally, we can combine like terms:
Distance = 2x^2 + 152x + 150
Therefore, the expression that represents the distance that the plane can travel in 2x + 1 hours is 2x^2 + 152x + 150.
These cards can be sorted into three pairs, where each pair adds to the same number. What is this number? -80-62 -4 -2
0 + (-66) Plus 18 = -48 is indeed the common sum for every one of these pairings. Hence, -48 is the solution.
The common difference sum is what?The total of the first n terms in the arithmetic sequence is equal to the sum (addition) of the n terms in AP. It is equal to n split by 2 times total sum of thrice the first term, "a," and the product of difference between the second and first term, "d," also; known as the common difference, plus (n-1), where n is the number of terms to be added.
The following step is to add -62 to all of the three remaining integers to create three new ones: -62 + (-4) (= -66, -62 Plus (-2) = -64, & -62 plus 80 = 18. From these three numbers, we now need to select two pairs that sum up to the same number.
We are able to observe that -66 plus -64 is -130, therefore the answer is 18. We obtain 148 when we multiply 130 by 18. As a result, the following three sets of numbers add up to a single total:
-80 and -80, -62 and - 4, and -148
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Glen received 6 birthday cards. If he is equally likely to read the cards in any order, what is the probability he reads the card from his parents and the card from his sister before the other cards?
Parents Card = 1/6 cards Glen has. 1/6=0.1666667, as a percet 16.6667%
Sister Card = 1/6 cards Glen has. 1/6=0.1666667, as a percet 16.6667%
how was texas affected by opec’s restrictions on oil production in 1973
1. competition from opec countries meant fewer jobs in texas
2. higher oil prices brought wealth to the state
3. may texans returned to the rural areas
4. transportation industries became for profitable
After answering the provided question, we can conclude that the oil industry and related sectors were the primary direct beneficiaries.
what is expression ?An expression in mathematics is a collection of representations, octal, and huge corporations that resemble a clear association or regimen. A real number, a mutable, or a combination of the two can be used as an expression. Mathematical operators include inclusion, subtraction, rapid spread, division, and exponentiation. Expressions are widely used in arithmetic, mathematics, and shape. They are used in the representation of mathematical formulas, the solution of equations, and the simplification of mathematical relationships.
Option 2 is the correct response. Texas benefited from OPEC's oil production restrictions in 1973 because it resulted in a significant increase in oil prices, which brought wealth to the state. At the time, Texas was the largest oil-producing state in the United States.
Option 1, 3, and 4 are incorrect. While OPEC's restrictions did increase competition from other countries, which could have affected employment in the oil industry, there is no evidence that it resulted in fewer jobs in Texas overall. Finally, while transportation industries may have benefited indirectly from the increase in oil prices, the oil industry and related sectors were the primary direct beneficiaries.
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La profesora Elena compró 28 lapiceros y repartió a sus estudiantes 5/7 de los lapiceros. ¿Cuántos lapiceros le quedaron a la profesora Elena?
Respuesta (Español/Spanish):
20 lapices
Explicación paso-a-paso (Español/Spanish):
Multiplica 28 por 5/7.
Answer (English/Inglés):
20 pencils
Step-by-step explanation (English/Inglés):
Multiply 28 by 5/7
HELPPPPPPP PLSSSSSS!!!!!!!!!!
The seats available to a baseball game come in four types: bleacher, box, club, and grandstand. There are 12.600 box seats and 5.400 club seats available.
According to the graph, what is the total number of seats available?
the total number of seats available is 45,000. just by using graph percentage and given information we are able to get answer
what is percentage?
A percentage is a way of expressing a number as a fraction of 100. It is represented by the symbol % (per cent), which means "per hundred".For example, if we say that a student scored 80% on a test, it means that they got 80 out of 100 possible points.
In the given question,
We know that the number of box seats available is 12,600 and the number of club seats available is 5,400.
Let's use the information about the percentages of grandstand and bleacher seats to find their actual numbers.
If grandstand seats make up 42% of the total seats, then we can write:
Grandstand seats = 0.42 x Total seats
Similarly, if bleacher seats make up 18% of the total seats, we can write:
Bleacher seats = 0.18 x Total seats
We can now add up the number of seats in each category to find the total number of seats:
Total seats = Box seats + Club seats + Grandstand seats + Bleacher seats
Total seats = 12,600 + 5,400 + 0.42 x Total seats + 0.18 x Total seats
Simplifying the equation, we get:
Total seats = 18,000 + 0.6 x Total seats
0.4 x Total seats = 18,000
Total seats = 45,000
Therefore, the total number of seats available is 45,000..
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A telephone company charges 50 cents for a
long distance call for the first two minutes, and
30 cents for each additional minute. Find the cost
of a 15-minute call.
Answer: $4.40 is the cost for the call
Hi i dont rlly uinderstand the question where would it go??
Select all of the following tables which represent y as a function of x and are one-to-one.
1. X: 1, 10, 13
Y: 3, 8, 12
2. X: 1, 10, 10
Y: 3, 8, 12
3. X: 1, 10, 13
Y: 3, 8, 8
For the given functions of x Table 2 is a one to one function. Table 2 is not a one to one function. Table 3 is not a one to one function.
What is one to one function?A one-to-one function is one in which every distinct input (or x-value) corresponds to a distinct output (or y-value). To put it another way, no two distinct inputs may result in the same outcome. Also, the same input cannot result in more than one output.
Injective functions are another name for one-to-one operations. They are crucial in many branches of mathematics, such as geometry, algebra, and calculus. A function's inverse, or new function that "undoes" the previous function by flipping the input and output variables, is defined in particular using one-to-one functions.
Table 1:
Because each x-value corresponds to a distinct y-value and each y-value to a unique x-value, Table 1 depicts y as a function of x and is one-to-one.
Table 2:
Because there are two separate y-values associated with the x-value of 10, Table 2 does not show y as a function of x. (8 and 12).
Table 3:
Because the y-value of 8 has two separate x-values, Table 3 does not show y as a function of x. (10 and 13).
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i need 12 and 14 show work pls
The answers of the given question are (12) the maximum angle at which the ball can be hit and land within the court is approximately 9.56° degrees. (14) the length of the ramp is approximately 35.5 inches.
What is Angle?an angle is a measure of the difference in direction between two lines or surfaces that meet at a point. It is defined as the ratio of the length of the arc that separates two intersecting lines or planes to the radius of the circle or sphere that the arc belongs to.
Angles are typically measured in degrees or radians, with a full circle consisting of 360° degrees or 2π radians. Angles can be acute (less than 90° degrees), right (exactly 90° degrees), obtuse (greater than 90° degrees but less than 180° degrees), or straight (exactly 180° degrees).
(12). To determine the maximum angle at which the ball can be hit and land within the court, We can use the following formula to solve the problem:
d = v² * sin(2θ) / g
Where:
d = the horizontal distance the ball will travel
v = the initial velocity of the ball
θ = the launch angle
g = the acceleration due to gravity
We can assume that the initial velocity of the ball is constant and equal to the velocity at which the ball was hit. Also, we know that the height at which the ball was hit is 2.44m, so we can use the following formula to find the initial velocity of the ball:
v² = 2gh
Putting in given values, we will get:
v² = 2 * 9.81 m/s² * 2.44m = 47.9424
v = √(47.9424) = 6.92 m/s (rounded to two decimal places)
we can plug in the given values and solve for θ:
9.4 = (6.92)² * sin(2θ) / 9.81
sin(2θ) = 9.4 * 9.81 / (6.92)² = 0.3209
2θ = sin^-1(0.3209) = 19.12
θ = 9.56° degrees (rounded to the nearest degree)
Therefore, the maximum angle at which the ball can be hit and land within the court is approximately 9.56° degrees.
(14). To find the length of the ramp, we can use the following formula:
length = height / sin(θ)
Where:
height = 12 inches
θ = 17° degrees
Plugging in the given values, we get:
length = 12 / sin(17) = 35.5 inches (rounded to one decimal place)
Therefore, the length of the ramp is approximately 35.5 inches.
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if point A(2,-3) is reflected across the x-axis.
What are the coordinates of À?
Answer:
A'(2, 3)
Step-by-step explanation:
When a point is reflected across the x-axis, its y-coordinate is negated while its x-coordinate remains unchanged.
Therefore, reflecting point A(2,-3) across the x-axis results in a new point with the same x-coordinate but a negated y-coordinate:
A'(2, 3)
So the coordinates of the reflected point A' are (2, 3).
Plane B is flying 75mph 75 mph faster than Plane A. Find the time it takes for Plane A to travel 2300 2300 miles if it takes Plane B the same amount of time to travel 2600 2600 miles.
Plane A 4 hours to travel 2300 miles.
Plane takeoff angle.
Angel
During take off, a plane leaves the ground and travels in a straight line until it reaches a height of 10 km. The distance the plane flies during take off should be in the range 57 km to 62 km. What is the smallest possible angle that the path of the plane could make with the ground? Give your answer in degrees to 1 d. p.
Let's assume that the plane travels a distance of x km during take off and reaches a height of 10 km. Then, using trigonometry, we can find the angle θ between the ground and the path of the plane:
tan(θ) = 10/x
We want to find the smallest possible angle θ, which means we need to maximize x. From the given information, we know that x must be in the range 57 km to 62 km. Therefore, to maximize x, we choose x = 62 km.
Plugging this into the equation above, we get:
tan(θ) = 10/62
θ = arctan(10/62) ≈ 8.8°
Therefore, the smallest possible angle that the path of the plane could make with the ground is approximately 8.8 degrees.
Angel
Xochitl spots an airplane on radar that is currently approaching in a straight line, and that will fly directly overhead. The plane maintains a constant altitude of 7425 feet. Xochitl initially measures an angle of elevation of 19° to the plane at point A. At some later time, she measures an angle of elevation of 37° to the plane at point B.
Find the distance the plane traveled from point A to point B. Round your answer to the nearest foot if necessary
Let's assume that the distance from Xochitl to point A is d1 and the distance from Xochitl to point B is d2. We want to find the distance the plane traveled from point A to point B, which is the difference between d1 and d2.
From the given information, we can set up the following two equations:
tan(19°) = 7425/d1
tan(37°) = 7425/d2
Solving for d1 and d2, we get:
d1 = 7425/tan(19°) ≈ 22977.6 feet
d2 = 7425/tan(37°) ≈ 13060.2 feet
Therefore, the distance the plane traveled from point A to point B is:
d1 - d2 ≈ 9917.4 feet ≈ 3021 meters
Rounding to the nearest foot, we get that the distance the plane traveled from point A to point B is approximately 9917 feet.
Angel
Plane B is flying 75mph 75 mph faster than Plane A. Find the time it takes for Plane A to travel 2300 2300 miles if it takes Plane B the same amount of time to travel 2600 2600 miles.
Let's start by using the formula for distance, rate, and time:
distance = rate x time
Let's assume that Plane A's speed is r mph. Then we know that Plane B's speed is r + 75 mph.
We also know that Plane A travels 2300 miles and Plane B travels 2600 miles. Since they take the same amount of time to travel their respective distances, we can set up the following equation:
2300/r = 2600/(r + 75)
To solve for r, we can cross-multiply and simplify:
2300(r + 75) = 2600r
2300r + 172500 = 2600r
300r = 172500
r = 575 mph
Now that we know Plane A's speed, we can use the formula for distance, rate, and time to find the time it takes for Plane A to travel 2300 miles:
distance = rate x time
2300 = 575 x time
time = 4 hours
If 421,000 people each receive an average refund of $3,400, based on an interest rate of 3 percent, what would be the lost annual income from savings on those refunds?
The lost annual income from savings on those refunds would be $43,032,000.
How to find the lost annual income?o calculate the lost annual income from savings on those refunds, we need to first calculate the total amount of money refunded, and then calculate the lost income from that amount.
The total amount refunded would be:
421,000 people x $3,400 per person = $1,434,400,000
Next, we can calculate the lost income from that amount at an interest rate of 3 percent. To do this, we can use the simple interest formula:
I = P x R x T
Where:
I = interest
P = principal (the amount refunded)
R = interest rate (as a decimal)
T = time (in years)
Substituting the values we have:
I = $1,434,400,000 x 0.03 x 1
I = $43,032,000
Therefore, the lost annual income from savings on those refunds would be $43,032,000.
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with solution pleasee
y=3
Step-by-step explanation:
3×5=15
2×3=6
15-6=9
The following data are the heights (in inches) of 40 students in a statistics class 59; 60; 61; 62; 62; 63; 63; 64; 64; 64; 65; 65; 65; 65; 65; 65; 65; 65; 65; 66; 66; 67; 67; 68; 68; 69; 70; 70; 70; 70; 70; 71; 71; 72; 72; 73; 74; 74; 75; 77 a. Find the five-number summary for the data and construct a box plot. b.Find the IQR
The five-number summary for data and construct a box plot is: 59, 62, 65, 70, 77
The IQR for the data is 8.
What is median ?
The median is a measure of central tendency in statistics. It is the value separating the higher half from the lower half of a data sample. To find the median of a data set, the data is first arranged in ascending or descending order, and then the middle value is identified. If the data set has an odd number of values, the middle value is the median. If the data set has an even number of values, the median is the average of the two middle values. The median is a useful measure of central tendency when the data contains outliers or extreme values that may affect the mean.
According to the question:
a. The five-number summary consists of the minimum, lower quartile (Q1), median (Q2), upper quartile (Q3), and maximum. To find these values:
Minimum: 59
Q1: the median of the lower half of the data, which is the median of the first 20 values (when ordered from smallest to largest): (62 + 62) / 2 = 62
Median (Q2): the middle value when the data is ordered from smallest to largest: (65 + 65) / 2 = 65
Q3: the median of the upper half of the data, which is the median of the last 20 values: (70 + 70) / 2 = 70
Maximum: 77
Therefore, the five-number summary is: 59, 62, 65, 70, 77
To construct a box plot, we can draw a number line and mark the five-number summary points. We then draw a box from Q1 to Q3, with a line at the median (Q2) inside the box. Finally, we draw whiskers from the box to the minimum and maximum values, unless there are outliers that are more than 1.5 times the interquartile range (IQR) away from the box.
b. The interquartile range (IQR) is the difference between the upper and lower quartiles, or Q3 - Q1. From part (a), we have Q1 = 62 and Q3 = 70, so:
IQR = Q3 - Q1 = 70 - 62 = 8
Therefore, the IQR for the data is 8.
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A beverage dispenser at a party measured 14 cm x 13 cm x 60 cm. Before it was filled completely, the beverage dispenser was only
5
8
full. How much beverage was added to the dispenser such that it was full eventually?
4,110 cm³ of beverage needs to be added to fill the dispenser completely.
Finding the amount of beverage needed:The beverage dispenser is a rectangular prism, so we need to use the formula of volume of a rectangle prism to find the total amount of beverage in the dispenser. Now subtract the amount of beverage initially the dispenser have from the total amount of beverage dispenser.
Here we have
A beverage dispenser at a party measured 14 cm x 13 cm x 60 cm.
Before it was filled the beverage dispenser was only 5/8 full.
The total volume of the beverage dispenser can be calculated by multiplying its dimensions:
V_total = 14 cm x 13 cm x 60 cm = 10,920 cm³
If the dispenser was only 5/8 full, then the remaining volume that needs to be filled will be equal to 3/8
V_remaining = (3/8) x V_total = (3/8) x 10,920 cm³ = 4,110 cm³
Therefore,
4,110 cm³ of beverage needs to be added to fill the dispenser completely.
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In a large population of nurses, suppose 20% of the nurses would prefer the night shift. If a random sample of 10 nurses is taken, what is the probability that exactly 2 nurses prefer the night shift?
The probability of exactly 2 nurses preferring the night shift in a random sample of 10 nurses is approximately 0.302 or 30.2%.
What is binomial probability?A sort of probability distribution known as a binomial probability defines the likelihood of a certain number of successes (or "positive outcomes") in a predetermined number of independent trials with just two potential outcomes (often referred to as "success" and "failure").
According to the given information:
This is a binomial probability problem since we have a fixed number of trials (sampling 10 nurses) and two possible outcomes (nurses preferring or not preferring the night shift) with a known probability of success (20% or 0.2).
The probability of getting exactly 2 nurses who prefer the night shift can be calculated using the following formula:
P(X = k) = (n choose k) *[tex]p^{k} *(1-p)^{n-k}[/tex]
where:
P(X = k) is the probability of getting k successes (2 nurses who prefer the night shift)
n is the total number of trials (10 nurses)
k is the number of successes we want (2 nurses who prefer the night shift)
p is the probability of success (0.2, or 20%)
(n choose k) is the number of ways to choose k items from a set of n items, which can be calculated using the binomial coefficient formula: (n choose k) = n! / (k! * (n-k)!)
Substituting the values into the formula, we get:
P(X = 2) = (10 choose 2) * [tex]0.2^2 * 0.8^8[/tex]
= 45 * 0.04 * 0.16777216
= 0.301989888
Therefore, the probability of exactly 2 nurses preferring the night shift in a random sample of 10 nurses is approximately 0.302 or 30.2%.
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Help please this makes no sense to me. Can someone please explain?
Therefore option c is the best answer:
Define weight?
Weight is a measure of the force exerted on an object due to gravity. It is proportional to the mass of the object and the acceleration due to gravity. The standard unit of weight is the Newton (N) in the International System of Units (SI).
What exactly is MASS?
Mass is a measure of the amount of matter in an object. It is a scalar quantity and is usually measured in kilograms (kg) in the International System of Units (SI).
A box had 6pencils each pencil wt. x gram.
The 6pencil wt. a combined total is 54 gram.
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The two statements below are different ways to say that the sides of these similar triangles are proportional.
Complete the equations that go with the statements.
PLSS I NEED THISS
Answer:
e, cc, dStep-by-step explanation:
You want the different ways sides of similar triangles can be shown as proportional.
Corresponding sidesFrom shorter to longer, the corresponding sides in the similar triangles are ...
Smaller ... Larger
b . . . . . . . e
a . . . . . . . d
c . . . . . . . f
PairsThe proportions are written by choosing two letters and their corresponding letters. The two chosen can be from different columns (part 1) or from the same column (part 2). The corresponding letters are written in the same place in the proportion fraction
[tex]\dfrac{a}{d}=\dfrac{b}{\boxed{e}}=\dfrac{\boxed{c}}{f}[/tex]
[tex]\dfrac{a}{b}=\dfrac{d}{e}\qquad\dfrac{b}{\boxed{c}}=\dfrac{e}{f}\qquad\dfrac{c}{a}=\dfrac{f}{\boxed{d}}[/tex]
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Additional comment
Any proportion can be written "sideways" or "upside down." Corresponding parts have the same relationship in any case.
[tex]\dfrac{a}{b}=\dfrac{d}{e}\ \Leftrightarrow\ \dfrac{a}{d}=\dfrac{b}{e}\ \Leftrightarrow\ \dfrac{b}{a}=\dfrac{e}{d}\ \Leftrightarrow\ \dfrac{d}{a}=\dfrac{e}{b}[/tex]
17 is what percent of 20?
Answer: 85% or 17/20
Step-by-step explanation: Ok, so 17 being what percent of 20 is 17/20. Then, simply divide from there to get 0.85, also known as 85%.
1. Mark is late. Do you think he ............. about the dinner?
Answer: forgot
Step-by-step explanation:
1. Mark is late. Do you think he forgot about the dinner?
help pls lots of points show work
The lengths of the variables are 17. x = 14√2, 18. x = 22.5√2, 19. x = 22√2, 20. x = 105√2 and other solutions are listed below
How to determine the lengths of the variablesQuestion 17 - 22
In a 45-45-90 triangle, also known as an isosceles right triangle, the two legs (the sides opposite to the two 45-degree angles) are congruent and the hypotenuse (the side opposite to the 90-degree angle) is equal to the √2 times the length of either leg.
Using the above, we have the following values
17. x = 14√2
18. x = 22.5√2
19. x = 22√2
20. x = 105√2
21. x = 88√2
22. x = 10
Question 23
Here, we have
sin(30) = 9/x
x = 18
y² = 18² - 9²
y² = 9√3
Question 24
Here, we have
cos(60) = y/4√3
y = 2√3
x² = (4√3)² - (2√3)²
x = 6
Question 25
Here, we have
sin(30) = 20/y
y = 40
x² = (40)² - (20)²
x = 20√3
Question 26
Here, we have
cos(60) = x/98
x = 49
y² = (98)² - (49)²
y = 49√3
Question 27
Using the definition above, we have
Leg = 38/√2
Leg = 19√2
Question 28
Using the definition above, we have
Hypotenuse = 77√2
Question 29
For the equilateral triangle, we have
Triangle length = x
This gives
tan(60) = 33/(x/2)
So, we have
x/2 = 33/tan(60)
x/2 = 33/√3
x = 22√3
So, the side lengths are 22√3 feet long
Question 30
Here, we have
Side length = 150 ml
So, the hypotenuse is
Hypotenuse = 150√2
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I need help a question
The scatterplot of the Median Value of Used Car Sales (in billions of pounds) to the Median Volume of Used Cars Sold (in millions) indicates;
(a) Independent variable; Median Volume of Used Cars Sold
Dependent variable; Median Value of Used Car Sales
(b) The median is less sensitive to outliers in the data than the mean
(c) The estimate of the median value is 20 billion pounds
(d) The predicted median value is about £28.185
(e) The other factors includes; The age, condition and location of the car, and the availability of financing.
What is a scatterplot?A scatterplot is a mathematical diagram or plot on Cartesian coordinates to display values of data points containing two variables in a dataset.
(a) The vertical axis of the scatter plot is the median value of used car sales in billions of pounds. The horizontal axis is the median volume of used cars sold in millions. Therefore;
The independent variable is the variable in the horizontal axis of a graph, which is the median volume of used cars soldThe dependent variable is the median value of used cars sold(b) The variability of the values in the scatter plot indicates that the possibility for outliers in the data.
The median value and median volume are used instead of the mean because of the lower sensitivity of the median to the outliers than the mean. The median is defined as the middle value in a set of data while the mean is the average of all the values in a dataset. Whereby the dataset consists of outliers, the outliers can skew the mean, while the outliers do not affect the median.
(c) The median value of the data point on the graph that corresponds to the 2.3 million median volume of used car sold is about 20 billion pounds. Therefore;
The estimate of the median value of sales if the median volume of used cars sold is 2.3 million is about 20 billion pounds.(d) The equation for the median value of used car sales, value = 30.97 - 1.211 × Volume, indicates that if the volume of used cars sold is 2.3 million, we get;
Value = 30.97 - 1.211 × 2.3 ≈ 28.185
Therefore, using the equation, 30.97 - 1.211 × Volume;
The median value of sales, if the median volume of used cars sold is 2.3 million is about 28.185 billion pounds(e) The other factors beside the price of the used cars that influence the volume of used cars sold includes the following factors,
The age of the car
The car's condition
The car's location
The availability of financing
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Si seis conejos necesitan 10 sacos de comida a la semana, ¿cuántos sacos necesitarán nueve conejos para comer durante una semana?
Therefore, nine rabbits will need 7.5 sacks of food for one week.
What is unitary method?The unitary method is a mathematical technique that involves finding the value of a single unit to determine the value of a given number of units. It is a method of solving mathematical problems that involve proportional relationships between quantities. The unitary method is commonly used in various areas of mathematics, such as algebra, arithmetic, and geometry. It is also used in everyday life to solve problems related to money, time, distance, and other quantities.
Here,
To solve this problem, we can use proportionality. We know that the number of sacks of food needed is directly proportional to the number of rabbits.
Let x be the number of sacks needed for 9 rabbits. Then, we can set up the following proportion:
6/10 = 9/x
Cross-multiplying, we get:
6x = 90
Dividing both sides by 6, we get:
x = 15/2 or 7.5
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Complete question:
If six rabbits need 10 sacks of food per week, how many sacks will nine rabbits need to eat for one week?
Interest compounded semi annually is compounded four times a year true or false
Answer:
The given statement is False. When the interest is compounded half yearly the number of conversion periods will be two because a year comprises 12 months and has two periods of six months each.
Step-by-step explanation:
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Two parallel lines are cut by transverse as shown. Determine the measures of 1 through 7
Both angles on the parallel lines are related as ∠1=180°-∠7
Define Vertical Angles (Vertically Opposite Angles)Vertical angles, also known as vertically opposed angles, are generated when two lines intersect. Angles that are vertically opposite one another are always equal to one another. Moreover, a vertical angle and the angle to which it is next are supplementary angles, meaning their sum is 180 degrees.
To find: measure ∠1 through ∠7
∠7=∠5 ( vertically opposite angle)
∠5=∠2( co-exterior angle)
∠1+∠2=180°
( A straight line has a maximum angle of 180°.)
∠1=180°-∠2
∠1=180°-∠5
∠1=180°-∠7
Hence, both angles on the parallel lines are related as ∠1=180°-∠7
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