Explain how the vertical line test can be used to determine if a graph
is a function.

Answer:

Step-by-step explanation:

hi Is that you on your pic

Answer:

it is about 0.008353

Step-by-step explanation:

I will give the explanation later but i hope the answer helps  

Answer:

a on edge 2021

Step-by-step explanation:

i took the test and got 100, hope this helps:)

Answer:

I think it is D

Step-by-step explanation:

Edge

Answer:

x = 3a- 7/2

Step-by-step explanation:

Multiply 3 by both sides

2x+7=6a

Divide both sides by 2

x = 3a- 7/2

Answer:

12 boys, 36 girls

Step-by-step explanation:

We can use systems of equations to solve this using substitution.

Let b = # of boys in the class

Let g = # of girls in the class

b + g = 48

g=3b

b+(3b)=48

4b=48

b=12

12*3=36

Check:

36+12=48

Answer:

d = st,

Step-by-step explanation:

Distance= speed times rate

Answer:

4p^2-8p-5

Step-by-step explanation:

Answer:

4p^2-8p-5

Step-by-step explanation:

Hope this helps :)

The height of the building is approximately 554.26 feet.

To find the height of the building, you can use the tangent formula in trigonometry. The formula you need is:
height = distance × tan(angle)
where "height" is the height of the building, "distance" is the distance from the base of the building, and "angle" is the angle of elevation.
In this case, the distance is 2 miles and the angle of elevation is 3 degrees. First, convert the angle to radians:
angle (in radians) = angle (in degrees) × (π/180)
angle (in radians) = 3 × (π/180) ≈ 0.05236 radians
Now, plug the values into the formula:
height = 2 miles × tan(0.05236 radians)
To get the height in feet, convert miles to feet (1 mile = 5280 feet):
height = (2 × 5280) × tan(0.05236 radians) ≈ 554.26 feet

Learn more about building here

https://brainly.com/question/26726050

#SPJ11

Regression analysis is a statistical method used to investigate the relationship between a dependent variable (y) and one or more independent variables (x). B. The first equation is for sample data, the second equation is for a population.

The two regression equations mentioned in the question are:y = b0 + b1x and y = β0 + β1xThe difference between these two equations is explained below:A. The first equation is for sample data, and the second equation is for a population.The difference between the two equations is that the first equation (y = b0 + b1x) is for sample data, whereas the second equation (y = β0 + β1x) is for a population. When the regression analysis is performed on a sample of data, we use b0 and b1 as the estimates of the population parameters β0 and β1. These estimates are obtained using the sample data. Therefore, the first equation is an estimate of the true population regression equation. B. The first equation is for sample data, and the second equation is for a population.

As previously stated, the first equation is for sample data, while the second equation is for a population. It is essential to understand the difference between these two because the sample regression equation (y = b0 + b1x) can be used to make predictions about the population. However, it is necessary to use the population regression equation (y = β0 + β1x) to draw inferences about the population as a whole. Therefore, the second equation is used for hypothesis testing, while the first equation is used for prediction purposes. In conclusion, the two equations have the same structure, but they are different in terms of the population or sample data that they represent.

To learn more about regression equations, refer:-

https://brainly.com/question/32162660

#SPJ11

Answer:

Widgets: 12

Wombats: 15

Step-by-step explanation:

Let x represent widgets

y represent wombats

Set up the equations

(1) x + y = 27

(2) 0.75x + 1.25y = 27.75

Solve equation (1), x + y = 27 for x

x = 27 - y

Substitute 27- y for x into equation (2)

0.75(27 - y) + 1.25y = 27.75

0.5y + 20.25 = 27.75

0.5y = 7.5

y = 15

Substitute 15 for y into equation (2)

x = 27 - 15

= 12

If the student correctly answers a question, the probability that the student really knew the correct answer is  0.941.

The probability that the student knows the answer to the question and correctly answers it is 0.8 x 1 = 0.8. The probability that the student guesses and correctly answers the question is 0.2 x 0.25 = 0.05. The probability that the student correctly answers the question is 0.8 + 0.05 = 0.85.

The probability that the student really knew the correct answer given that they correctly answered the question is 0.8 / 0.85 = 0.941. Therefore, the probability that the student really knew the correct answer is approximately 94.1%.

Know more about probability here:

https://brainly.com/question/30034780

#SPJ11

The statements which are always true regarding the diagram are:

1.  m∠5 + m∠6 = 180° (Linear Pair)

2. m∠ 2+ m∠ 3 = m∠ 6  (Exterior angle Property of Triangle)

3. m∠2 + m∠3 + m∠5 = 180° (Triangle Sum Property)

Consider Δ ABC with Exterior angles as

m∠ 1, m∠ 4 and m∠ 6

Exterior angle Property of Triangle:

An exterior angle of a triangle is equal to the sum of the opposite interior angles.

For Exterior ∠ 1 we have

m∠ 1 = m∠ 5 + m∠ 3 (Exterior angle Property of Triangle)

Similarly,

For Exterior ∠ 4 we have

m∠ 4 = m∠ 5 + m∠ 2 (Exterior angle Property of Triangle)

Similarly,

For Exterior m∠ 6 we have

m∠ 6 = m∠ 2 + m∠ 3  (Exterior angle Property of Triangle)

Triangle Sum Property:

In a triangle sum of the measures of angles is equal to 180°

m∠2 + m∠3 + m∠5 = 180°  (Triangle Sum Property)

Linear Pair:

The measure of a straight angle is 180 degrees, so a linear pair of angles must add up to 180 degrees.

m∠5 + m∠6 = 180°  (Linear Pair)

Learn more about angle geometry:

https://brainly.com/question/25770607

#SPJ1

It is critical to open a compass with over half the way in order for the arcs formed to meet for perpendicular bisector.

A perpendicular bisector would be a line that cuts a line segment in half and forms a 90-degree angle at the intersection point. In other words, a perpendicular bisector separates a line segment now at midpoint, forming a 90-degree angle.

Now, consider an example;

When you wish to build a perpendicular line on a line segment, like line AB, you do the following;

A line AB appears to be bisected perpendicularly as a result. The arcs would not have met if the compass is opened less than half way down line AB.

To know more about perpendicular bisector, here

https://brainly.com/question/7198589

#SPJ4

Answer:

Natural number

Step-by-step explanation:

May this help you

Answer:

32

Step-by-step explanation:

Green : black

3             4

We have 24 green

3+8=24

so  multiply each side by 8

Green : black

3*8         4*8

24            32

There are 32 black grapes

Answer:

32

Step-by-step explanation:

By Question :-

Let :-

Therefore,

Hi.

Answer:

\(\left(4x-1\right)^2\left(3x^2+3x-5\right)^2\)

Step-by-step explanation:

\((aa=a^2) \left(4x-1\right)\left(4x-1\right)=\left(4x-1\right)^2\\=\left(4x-1\right)^2\left(3x^2+3x-5\right)\left(3x^2+3x-5\right)\\\left(3x^2+3x-5\right)\left(3x^2+3x-5\right)=\left(3x^2+3x-5\right)^2\\=\left(4x-1\right)^2\left(3x^2+3x-5\right)^2\)

Answer:

A. Makes the most sense. If you are using multiplication you'd get 18 1/16

Step-by-step explanation:

The probability that the sample mean would be less than 127 wpm if 84-speed typists are randomly selected is: 0.033625

What is Mean?

In statistics, in addition to the mode and median, the mean is one of the measures of central tendency. Simply said, the mean is the average of the values in the given collection. It indicates that values in a certain data collection are distributed equally. The three most often employed measures of central tendency are the mean, median, and mode. The total values provided in a datasheet must be added, and the sum must be divided by the total number of values in order to get the mean. When all of the values are organized in ascending order, the Median is the median value of the provided data. While the number in the list that is repeated a maximum of times is the mode.

We have

\(\mu=124\)  

\(\sigma=15\)

n=84

We want to find the probability that the sample mean would be greater than 127 WPM is

\(\begin{aligned}P(\bar{X} > 127) &=P\left(\frac{\bar{X}-\mu}{\sigma / \sqrt{n}} > \frac{127-124}{15 / \sqrt{84}}\right) \\&=P(Z > 1.83)\end{aligned}\)

\(=0.033625\)

The required probability is 0.0336.

Hence, The probability that the sample mean would be less than 127 wpm if 84-speed typists are randomly selected is: 0.033625

To learn more about Mean and Probability, visit:

https://brainly.com/question/25870256

#SPJ4

Answer:

a) 7:4

b) 6:3

c) 4:2

d) 6:2

e) 4:3

f) 4:4

Answer:

a) 7:4

b) 6:3

c) 4:2

d) 6:2

e) 4:3

f) 4:4

Step-by-step explanation:

Determine the number of consonants and vowels, then turn them into ratios.

The curve y = 8e^x has maximum curvature at the point (0, 8).there is no point where the second derivative equals zero,

To determine the point of maximum curvature on the curve y = 8e^x, we need to find the second derivative of the function and identify the point where it equals zero. The second derivative represents the rate of change of the slope, or the curvature, of the curve.

First, we find the first derivative of y = 8e^x with respect to x:

dy/dx = 8e^x

Then, we differentiate again to find the second derivative:

d²y/dx² = d(8e^x)/dx = 8e^x

Setting the second derivative equal to zero:

8e^x = 0

Exponential functions, such as e^x, are never equal to zero for any value of x. Therefore, there is no point where the second derivative equals zero, indicating that the curve y = 8e^x does not have any inflection points or points of maximum curvature.

However, we can determine the point where the curvature is the greatest by considering the graph of y = 8e^x. Since the exponential function e^x is always positive, the curve y = 8e^x is always concave up. This means that the curvature is positive throughout the curve, but there is no specific point of maximum curvature.    

In conclusion, the curve y = 8e^x does not have a point of maximum curvature but is always positively curved.  

Visit here to learn more about maximum curvature:

brainly.com/question/8570736

#SPJ11

Answer:

f(x) = 9x - 1,200

Step-by-step explanation:

Let x represent the number of movie tickets sold.

9x will represent the profit made from selling movie tickets that day, since each ticket is 9 dollars.

To determine the profit, subtract 1,200 from 9x.

9x - 1,200 will represent the profit. Turn this into a function:

f(x) = 9x - 1,200 where x is the number of movie tickets sold and f(x) is the profit

Step-by-step explanation:

the sum of all angles in any quadrilateral is 360°.

so,

x + x + 3x + 8 + 3x + 8 = 360

8x + 16 = 360

8x = 344

x = 344/8 = 43°

3x + 8 = 3×43 + 8 = 129 + 8 = 137°

so, the angles are

43°

137°

43°

137°

Answer:

150m^2

Step-by-step explanation:

Given data

a=8m

b=17m

h=12m

We know that the expression for the area of a trapezoid is given as

Area= (a+b/2)*h

substitute

Area= (8+17/2)*12

Area= 25/2 *12

Area= 12.5*12

Area= 150 m^2

Hence the area is 150m^2

From the probability distribution for the number of defective items in a random sample, the expected value of X is 2.82.

To calculate the expected value of X, we need to multiply each possible value of X by its corresponding probability and sum them up.

The expected value of X, denoted as E(X) or μ, is calculated using the formula:

E(X) = ∑ (x * p(x))

where x represents each possible value of X and p(x) represents the corresponding probability.

In this case, the probability distribution for X is given as follows:

x: 0 1 2 3 4

p(x): 0.1 0.15 0.13 0.07 0.55

To calculate the expected value, we perform the following calculations:

E(X) = (0 * 0.1) + (1 * 0.15) + (2 * 0.13) + (3 * 0.07) + (4 * 0.55)

E(X) = 0 + 0.15 + 0.26 + 0.21 + 2.2

E(X) = 2.82

The expected value represents the average value or mean of the probability distribution. In this case, it represents the average number of defective items we expect to find in a random sample based on the given probabilities.

To learn more about expected value click on,

https://brainly.com/question/31319639

#SPJ4

Answer:

The +1 in f(x) is the y intercept

The +1 in g(x) is the y coordinate of the vertex

Step-by-step explanation:

For f(x), plugging in x = 0 leads to

f(x) = 2x^2+5x+1

f(0) = 2(0)^2+5(0)+1

f(0) = 1

Showing that (0,1) is the y intercept of f(x).

The same is not true for g(x)

g(x) = 2(x+5)^2+1

g(0) = 2(0+5)^2+1

g(0) = 51

-------------------------------

The +1 for g(x) represents the y coordinate of the vertex. Recall that vertex form in general is

y = a(x-h)^2+k

with (h,k) being the vertex. This means we can quickly spot the vertex for g(x) without having to graph. The same cannot be said for f(x) as we need to complete the square to get f(x) into vertex form. Currently, f(x) is in standard form.

Answer:

20%

Step-by-step explanation:

20/25 = blue

This means 5/25 of the balls in the bag are NOT blue

(25-20 = 5)

We need to convert 5/25 to a percentage

\(\dfrac{5}{25} = \dfrac{5\times4}{25\times4}=\dfrac{20}{100}\)

% = per cent

"per" means "out of"

"cent" means "one hundred"

so

20/100 = 20%

Answer:

Your answer is: 2 + (1.29 * 30) = $40.70

Step-by-step explanation:

Check the picture below.