PLEASE HURRY!! WILL MARK BRAINLIEST!
The quadratic regression graphed on the coordinate grid What does the graph of the regression model show?
represents the height of a road surface x meters from
the center of the road.
•The height of the surface decreases from the center
Road Surface Height
out to the sides of the road.
• The height of the surface increases, then decreases,
from the center out to the sides of the road.
•The height of the surface increases from the center
out to the sides of the road.
• The height of the surface remains the same the entire
distance across the road.

PLEASE HURRY!! WILL MARK BRAINLIEST!The Quadratic Regression Graphed On The Coordinate Grid What Does

Answers

Answer 1

From the figure answer is option B which is The height of the surface increases, then decreases, from the center out to the sides of the road.

What is  quadratic regression?

Quadratic regression is a statistical method used to model the relationship between a dependent variable and an independent variable using a quadratic function. It is a type of polynomial regression, where the regression equation is a polynomial of degree two.

A center can refer to a point or a location that is the middle or central part of something. For example: In team sports, the center is a position that is located in the middle of the playing area or the team formation, and is often responsible for initiating or directing the team's plays.

In the given question ,

Let  y  be  height of the surface   and    x be length of the road    we know that the quadratic regression graphed represent a vertical parabola open downward

The function increase in the interval   [-5,0 ] to [0,0.30]    

The function decrease in the interval    [0,0.30]  to  [5,0]  

Therefore

The height of the surface increases, then decreases, from the center out to the sides of the road. If the height of the road surface is modeled by a quadratic function, it could have this U-shape, with the highest point (the vertex of the parabola) representing the center of the road, and the height decreasing as you move away from the center to the sides of the road.

To know more about quadratic regression, visit:

brainly.com/question/12602761

#SPJ1


Related Questions

What is 5 1/2 x 5 = ?

Answers

Answer:27.5

Step-by-step explanation:

i did this with a calculator, but the answer is

27.5

The ordered pairs (−4, 7) and (2, −2) are points on a graph of a linear equation. Which other points are also on the same line?
Select ALL that apply.
(−2, −6)
(−2, −5)
(4, −6)
(4, −5)
(0, −5)
(0, 1)

Answers

We can find the equation of the line passing through the given two points (-4, 7) and (2, -2) using the slope-intercept form of a linear equation:

slope (m) = (change in y) / (change in x) = [tex](-2 - 7) / (2 - (-4)) = -9/6 = -3/2[/tex]

Using point-slope form with the first given point (-4, 7), we get:

[tex]y - 7 = (-3/2)(x - (-4))\\y - 7 = (-3/2)x - 6\\y = (-3/2)x + 1[/tex]

Now we can plug in the x-coordinates of the other points given and check if they satisfy the equation.

[tex](−2, −6):\\y = (-3/2)x + 1\\-6 = (-3/2)(-2) + 1\\-6 = 3 + 1\\-6 ≠ 4 (not on the line)[/tex]

[tex](−2, −5):\\y = (-3/2)x + 1\\-5 = (-3/2)(-2) + 1\\-5 = 3 + 1\\-5 ≠ 4 (not on the line)(4, −6):\\y = (-3/2)x + 1\\-6 = (-3/2)(4) + 1\\-6 = -6 + 1\\-6 ≠ -5 (not on the line)(4, −5):\\y = (-3/2)x + 1\\-5 = (-3/2)(4) + 1\\-5 = -6 + 1\\-5 = -5 (on the line)[/tex]

To learn more about the equation of the line visit:

brainly.com/question/18831322

#SPJ1

What percent of 15 is 5?

Answers

Answer: 33.33%

Step-by-step explanation:

5/15 divided

1. What is the diameter of the circle above?
2.
What is the radius of the circle above?

Answers

Answer:

diameter = 34 radius = 17

Step-by-step explanation:

Look at the line in the middle of the circle that is the diameter, diameter is a straight line passing from side to side through the center of a circle.

radius is the distance from the center of the circle to any point on its circumference.

PACKAGING A video game system is packaged in a box that is in the shape of a cube. The length of the packaging box is 4x^2 y^5 . What is the volume of the packaging box in terms of x and y?

Answers

Answer: 64x^6y^15

Step-by-step explanation:

If the packaging box is in the shape of a cube, then all its sides are equal in length. Let's call the length of each side "s".

We know that the length of the packaging box is 4x^2 y^5, so:

s = 4x^2 y^5

To find the volume of the packaging box, we need to calculate s^3 (since the box is a cube).

s^3 = (4x^2 y^5)^3

s^3 = 4^3 (x^2)^3 (y^5)^3

s^3 = 64x^6 y^15

Therefore, the volume of the packaging box in terms of x and y is 64x^6 y^15.

mike and alain play a game in which each player is equally likely to win. the first player to win three games becomes the champion, and no further games are played. if mike has won the first game, what is the probability that mike becomes the champion?

Answers

The probability that Mike becomes the champion given that he has won the first game is 7/12.

To find the probability that Alain wins the championship given that Mike won the first game, we can repeat the same reasoning as before, but with Alain as the starting player.

P(Mike wins championship | Mike won first game) = 1 - P(Alain wins championship | Mike won first game)

This leads to:

P(Alain wins championship | Alain won first game) = 5/8

Therefore, we can conclude that:

P(Mike wins championship | Mike won first game) = 1 - P(Alain wins championship | Mike won first game) = 1 - 5/8 = 3/8 + 1/8 = 4/8 = 1/2

Thus, The probability that Mike becomes the champion given that he has won the first game is 7/12.

Learn more about Probability:

https://brainly.com/question/24756209

#SPJ4

Kevin bought snacks for his team's practice. He bought a bag of popcorn for $1.60 and a 8-pack of juice bottles. The total cost before tax was $16.80. How much was each bottle of juice?

Answers

Answer:

$1.90

Step-by-step explanation:

16.80 - 1.60 = 15.20, since we are finding the price of each bottle of juice.

1) Set up and equation equated to 15.20.

8x = 15.20

x = 15.20/8

x = 1.90

Therefore, each bottle of juice costs $1.90.

Use the drop-down menus to complete the sentence. the transformation is because the preserved.

Answers

A transformation is said to be not rigid because the segments is preserved.

A transformation is a function that maps one set of points to another set of points. There are different types of transformations, including translation, rotation, reflection, dilation, and combinations of these. Each type of transformation preserves certain properties of the shape or object.

The properties that are preserved during a transformation depend on the type of transformation

Similarly, a rotation is a transformation that rotates a shape or an object around a fixed point. During a rotation, the distance between any two points on the shape or object is preserved, but the direction may change. A reflection is a transformation that flips a shape or an object across a line. During a reflection, the distance between any two points on the shape or object is preserved, but the orientation may change.

To know more about transformation here

https://brainly.com/question/11709244

#SPJ4

1. nonrigid

2. segment lengths are not

Make a graph of kinetic energy versus mass for the bikers. Label each biker on your
graph. (4 points)

Answers

See Below

HAVE A NICE DAY !

pleaseeee help!!!!!!!!!

Answers

The phrase that reflects the amount of recordings, in thousands, owned by the collector 4 years later if it continues to expand at this rate is:   [tex]O 12 • (1.02)^48[/tex] Thus, option C is correct.

What number of records will increase by a factor?

o calculate the number of records that will increase by a factor, you first need to know the initial number of records. Let's call this number "N".

To increase the number of records by a factor of "F", you can simply multiply the initial number of records by the factor:

New number of records = N x F

For example, if you have 100 records and you want to increase the number of records by a factor of 3, the new number of records would be:

New number of records  [tex]= 100 x 3 = 300[/tex]

So, the new number of records would be 300.

The growth rate is 2% per month, which means that the number of records will increase by a factor of 1.02 each month. After 4 years (48 months), the number of records owned by the collector can be calculated using the formula:

[tex]12,000 x (1.02)^48[/tex]

Simplifying this expression, we get:

[tex]12,00x0 1.02^48[/tex]

Therefore, the expression that represents the number of records, in thousands, owned by the collector 4 years later if it continues to grow at this rate is: O 12 • (1.02)^48

Learn more about factor here:

https://brainly.com/question/14452738

#SPJ1

Triangle WXY, with a vertex X at (3, 0), is rotated clockwise 270° about the origin.

Which of the following rotations is equivalent 270° clockwise rotation about the origin?

clockwise 270°
counterclockwise 90°
counterclockwise 360°
clockwise 90°

Answers

Answer: A rotation of 270° clockwise is equivalent to a rotation of 90° counterclockwise, because a full rotation is 360° and 270° clockwise is the same as 90° counterclockwise in terms of direction.

Therefore, the answer is: counterclockwise 90°.

Step-by-step explanation:

Winston is baking a pie. The diameter of the pie is 12 inches. What is the area of the pie? Use 3. 14 for pi and round your answer to the nearest tenth

Answers

If the diameter of the pie is 12 inches, then the area of pie is 113.04 in² and 113 in² after rounding to the nearest tenth.

The formula for the area of a circle is: A = π × r²

where A is the area, pi is a mathematical constant approximately equal to 3.14, and r is the radius of the circle.

In this case, we are given the diameter of the pie, which is 12 inches. To find the radius, we need to divide the diameter by 2:

r = 12 / 2

= 6 inches

Now we can use the formula for the area of a circle to find the area of the pie:

A = π × r²

A = 3.14 × 6²

A = 113.04 square inches

Rounding to the nearest tenth gives:

A ≈ 113.0 square inches

Therefore, the area of the pie is approximately 113.0 square inches.

To learn more about area of a circle click here

brainly.com/question/28642423

#SPJ4

7 2/9 - 5 5/7 = ?

rlly stuck on this math assignment currently

Answers

Answer:

95/63 or 1 32/63

Step-by-step explanation:

turn the fraction into a mixed number/improper fraction

65/9-40/7

find a common denominator which in this case is 63

so, the first fraction you will multiply the numerator and denominator by 7 to get

455/63

then the second fraction multiply the numerator and the denominator by 9

360/63

then you would subtract the two numerators KEEP THE DENOMINATOR THE SAME

455/63-360/63=95/63

A population of a town increases by 7% every year. If its population today is 40,000, what is its population in 3 years?

Answers

A = 40,000(1 + 0.07)^3

A = 40,000(1.07)^3

A = 47,676.08

Therefore, the population of the town in 3 years will be approximately 47,676.

a crime reporter was told that on average, 3000 burglaries per month occurred in his city. the reporter examined past data, which were used to computed a 95% confidence interval for the number of burgalries per month. the confidence interval was from 2176 to 2784. at the 5% level of significance, do these data tend to support the alternative hypothesis, $h 1 \ne 3000$? calculate z test score

Answers

We need to calculate the z-test score. It is a statistical test for inference that tests the null hypothesis that the mean of a sample from a normal population equals a specified value, and it is a test of statistical significance. Z-score: Z = (x - μ) / (σ / √n)μ = 3000, x = (2176 + 2784) / 2 = 2480, σ is the standard error of the mean, and n is the number of data points.

Z = (2480 - 3000) / (3000 / √n). The standard error of the mean (SEM) is calculated as follows: SEM = σ / √nσ = (2784 - 2176) / (2 × 1.96) = 303.64. Therefore, SEM = σ / √n=303.64 / √n(303.64 / √n) = (3000 - 2176) / 1.96n = 141.56n = 142Z = (2480 - 3000) / (303.64 / √142)Z = -12.95.

Since Z is less than -1.96, the test is significant at the 5% level of significance. Therefore, we can refuse the null hypothesis, and the alternative hypothesis is accepted. Therefore, the data support the alternate hypothesis that the number of burglaries per month is not equal to 3000.

To know more about confidence intervals refer here:

https://brainly.com/question/24131141

#SPJ11

Compare the variations.



The mean absolute deviation of the number of wins is 1 of 2.
greater/leaser
for the Bears than for the Saints. This means the data values for the, 2 of 2.
saints/bears
are closer to the mean.

Answers

Therefore , the solution of the given problem of mean comes out to be one team's data values are closer to the median mean than that of the other.

Define mean.

The result from a set, also known as the arithmetic mean, is the sum of all values split by all of the values. It is frequently referred to as "mean" and is thought to be among the most commonly employed primary trend average. To obtain this answer, multiply the total number of numbers in the collection by the total number of values present.

Here,

The closer the data values are to the mean, the less variable they are, and the smaller the MAD.

A higher MAD shows that the data values are more variable and dispersed from the mean.

In this instance, the Bears' MAD of the amount of victories is 1, while the Saints' MAD is unspecified.

We cannot compare the distinctions of the two teams based solely on MAD since the Saints' MAD is not stated.

Since we cannot tell which team has a larger or smaller MAD, we cannot draw the conclusion that one team's data values are closer to the median mean than that of the other.

To know more about mean visit:

https://brainly.com/question/30094057

#SPJ1

how do you do this? I need helppppp

Answers

The constant of proportionality of the graph is k = 3/2.

How to get the constant of proportionality?

A general proportional relation between two variables y and x can be written as:

y = k*x

Were k is the constant of proportionality.

To find the value of k, we need to identify a point of the form (x, y) on the given graph, and then replace the values in the equation above, for example, we can use the point (4, 6), replacing that we will get:

6 = k*4

6/4 = k

3/2 = k

That is the constant of proportionality.

Learn more about proportional relations at:

https://brainly.com/question/12242745

#SPJ1

SOLVE WITH EXPLANATION GIVING BRAINLIEST IF YOU SOLVE IT CORRECTLY WITH EXPLANATION IF YOU DONT YOU GET REPORTED :/

Answers

Answer:

6.

[tex]2x - 1 = x + 3[/tex]

[tex]x = 4[/tex]

[tex] y = 4 + 3 = 7[/tex]

So the solution is (4, 7).

7. Substituting 4x into the second equation:

[tex]4x + x = 5[/tex]

[tex]5x = 5[/tex]

[tex]x = 1[/tex]

[tex]y = 4(1) = 4[/tex]

So the solution is (1, 4).

Which picture should be next in the sequence?​

Answers

The next picture in the sequence of pictures is a picture that has 16 cells

Identifying the next picture in the sequence

A pattern is a recurring design, shape, or arrangement that has a regular or logical repetition.

From the figure, we can see that teh pattern is

Picture = 2^n

Where n is the position

For the next picture, we have

n = 4

This means that

Picture = 2^4

So, we have

Picture = 16

Hence, the next picture would have 16 cells

Read more about sequence at

https://brainly.com/question/31096593

#SPJ1

To hire an accountant to prepare taxes costs a flat fee and an additional hourty rate. The amount the accountant costs can be modeled by the function A(X) = 140 +
25x, where x represents the number of hours the accountant works to prepare the taxes and 140 represents the flat fee. What is the value of A(215) and its
interpretation?
a A(215) = 3; If the accountant takes 215 hours to prepare the taxes, the cost wil be $2.
b A(215) = 3; If the account takes 3 hours to prepare the taxes, the cost wil be $215.
c A(215) = 5515; If the accountant takes 215 hours to prepare the taxes, the cost wil be $5,515.
d A(215) = 5515; If the accountant takes 5,515 hours to prepare the taxes, the cost will be $215.

Answers

Answer: The given function is:

A(x) = 140 + 25x

We need to find the value of A(215), which means we need to substitute x = 215 in the function and simplify:

A(215) = 140 + 25(215)

A(215) = 140 + 5375

A(215) = 5515

Therefore, the correct answer is (c) A(215) = 5515. The interpretation of this result is that if the accountant works for 215 hours to prepare the taxes, the cost will be $5,515, which includes the flat fee of $140 and an additional hourly rate of $25 for each hour worked.

Step-by-step explanation:

The value of A(215) and its interpretation are captured thus:

A(215) = 5515; If the accountant takes 215 hours to prepare the taxes, the cost will be $5,515

What does the function represents?

The function given as A(x) = 140 + 25x, represents the total cost of using the services of the accountants for tax computation and preparation, bearing in mind that the 140 means $140 which is the fixed charged irrespective of the number of hours it takes to prepare the tax returns whereas the 25x means that $25 is charged as variable fee for  every hour the accountant works on the tax computation

A(x) = 140 + 25x

In this case, A(215) means that 215 hours were made use of by the accountants, hence, to determine the total fees, we simply substitute for x

A(215) = 140+(25*215)

A(215) = 140+5375

A(215)=$5,515

Find out more about professional fees on: https://brainly.com/question/28447174

Tristan was out at a restaurant for dinner when the bill came. His dinner came to $22. He wanted to leave a 16% tip. How much do was his meal plus the tip, before tax, in dollars and cents

Answers

Answer: 25 dollars and 52 cents

Step-by-step explanation:

Bill = $22

Tip = 16/100 X 22 = $3.52

Total = 22 + 3.52 = $25.52

Answer:

$25.52

Step-by-step explanation:

16% × 22= $3.52

3.52 + 22= $25.52

how to do this.............

Answers

Answer:

The one selected is correct

Step-by-step explanation:

Can someone please
Help me on this? I’ll give 20 points for this

Answers

Answer:

a) 6x10^-6 b) 0.000006 c) I would not be concerned

Step-by-step explanation:

a)

50% is just half and more just means added onto.

Half of 4x10^-6 is 2x10^-6

If you add that onto the original value, you will have:

6x10^-6 (standard form)

b)

0.000006 (ordinary number)

c)

I would not be concerned about the increase in probability of a side effect while using the new medicine. The probability to begin with is extremely low, almost insignificant. While the 50% increase may sound intimidating, it is just a 50% increase on a number that is already very very small. Honestly, it makes almost no difference.

What is the area of this figure?

Enter your answer in the box.

Answers

Answer:

Step-by-step explanation:

wios,wal

a 17 ft ladder is leaning against a wall. if the bottom of the ladder is pulled along the ground away from the wall at a constant rate of 2ft/s, how fast will the top of the ladder be coming down the wall when the top is 8 ft above the ground

Answers

The top of the ladder is coming down the wall at a rate of 15.39 ft/s

Let's assume that the ladder makes a right angle with the wall and the ground. Let's call the distance between the bottom of the ladder and the wall "x" and the height of the ladder at a given time t "y". We want to find the rate of change of "y" with respect to time "t", or dy/dt, when y = 8 ft.

We can use the Pythagorean theorem to relate "x" and "y":

x^2 + y^2 = 17^2

Taking the derivative of both sides with respect to time "t", we get

2x(dx/dt) + 2y(dy/dt) = 0

We want to find dy/dt when y = 8 ft and dx/dt = 2 ft/s. We can solve for dy/dt

2x(dx/dt) + 2y(dy/dt) = 0

2y(dy/dt) = -2x(dx/dt)

dy/dt = -x/y(dx/dt)

Substituting x = sqrt(17^2 - y^2) and dx/dt = 2 ft/s, we get:

dy/dt = -(17^2 - y^2)/y

When y = 8 ft, we get

dy/dt = -(17^2 - 8^2)/8 = -15.39 ft/s

Learn more about Pythagorean theorem here

brainly.com/question/29253365

#SPJ4

question 1(multiple choice worth 3 points) (05.05 lc) according to the chart, from 1986-1996, unintentional drug overdose deaths per 100,000 population began to rise. the numbers for each year are, roughly, 2, 1, 2, 2, 1, 2, 2, 3, 3, 3, 3. what is the mean of these statistics? 24 2.18 24.18 2

Answers

The mean of the unintentional drug overdose deaths per 100,000 population from 1986-1996 is 2.18. (option 2).

To find the mean of a set of numbers, we add up all the numbers in the set and then divide by the total number of items in the set. In this case, we have the following numbers: 2, 1, 2, 2, 1, 2, 2, 3, 3, 3, and we want to find the mean.

To do so, we first add up all the numbers:

2 + 1 + 2 + 2 + 1 + 2 + 2 + 3 + 3 + 3 = 21

Then we divide by the total number of items in the set, which is 10:

21 / 10 = 2.1

Therefore, the mean of the unintentional drug overdose deaths per 100,000 population from 1986-1996 is 2.18.

Learn more about Statistics:

https://brainly.com/question/15525560
#SPJ4

Please help! Im a struggling depressed student that needs to desperately catch up.

Answers

Answer:

25%

Step-by-step explanation:

30/120 = 1/4

1/4 = 25%

3x (x-4) (3x + 5) = 0

Answers

Therefore, x = 0, x = 4, and x = -5/3 are the answers to the equation 3x(x-4)(3x+5) = 0.

what is equation ?

An equation in mathematics is a claim that two expressions are equivalent. An equals sign (=) separates the left and right sides of an equation, which usually has two sides. Variables, constants, and mathematical operations like addition, subtraction, multiplication, division, exponents, and roots may be used in the formulas on either side of the equals sign. Finding the number of the variable or variables that make an equation true is the goal of an equation.

given

The zero product property, which asserts that at least one of the factors must be zero if the product of two or more factors equals zero, can be used to solve the equation 3x(x-4)(3x+5) = 0.

We then solve for x by setting each component equal to zero:

3x = 0, 3x + 4, or 3x + 5 = 0.

When we factor x into each solution, we obtain:

3x = 0 --> x = 0

x-4 = 0 —> x = 4

Therefore, x = 0, x = 4, and x = -5/3 are the answers to the equation 3x(x-4)(3x+5) = 0.

To know more about equation visit:

https://brainly.com/question/649785

#SPJ1

10 ft
20 ft
15 ft
Find the area.
A = [?] ft²
Round to the nearest
hundredth.

Answers

The total area of the composite figure is 114.25 square feet.

How to find the area of the shape?

The area of a circle of diameter D is:

A = 3.14*(D/2)²

And the area of a triangle of base B and height H is:

A = B*H/2

We can decompose the figure into two simpler ones, a triangle of base of 10ft and height of 15 ft, whose area is:

A = 10ft*15ft/2 = 75ft²

And half of a circle of diameter of 10ft, whose area is:

A = 0.5*3.14*(10ft/2)² = 39.25 ft²

Then the total area of the figure is:

area =  75ft² + 39.25 ft² = 114.25 ft²

Learn more about area at:

https://brainly.com/question/24487155

#SPJ1

A line passes through the points

Answers

Answer:

5x+2y = -24

Step-by-step explanation:

We have the point (-4,-2) and a slope of -5/2.

Using the point-slope form of a line:

y-y1 = m(x-x1)  where m is the slope and (x1,y1) is a point on the line.

y- -2 = -5/2(x- -4)

y+2 = -5/2 (x+4)

Multiply each side by 2.

2(y+2) = -5(x+4)

2y+4 = -5x-20

Add 5x to each side.

5x+2y +4 = -20

Subtract 4 from each side.

5x+2y = -24

Other Questions
Given K with secants NS and NR , which expression represents PS. A circle with center point K. Two chords PS and QR intersects at point N outside the circle. A. (NQ)(NQ+QR)NPNP B. (QR)(NQ+QR)NPNP C. NP+NQ+QRNRNR D. (NP)(NQ+QR)NRNR a psychologist notes an association between the iqs of parents and their children, or between beauty and social popularity, or between anxiety and test performance. in each case, two events are correlated, which means what happens if you shutdown a clustered windows server 2016 hyper-v server without pausing it first? Can you guys help me on this?? when the mass media focus their attention on particular events or issues, they determine the major topics of discussion for individuals and society. this defines: I'll give 10 points to anyone who can answer the question. The table shows the results for spinning the spinner 75 times. What is the relative frequency for the event "spin a 4"?The table shows the results for spinning the spinner 75 times. What is the relative frequency for the event "spin a 4"? which body composition assessment uses technology that can map the body in slices, or cross-sections, and show ectopic adipose tissue, including visceral fat?group of answer choices an insured wants to fly to canada and then down to mexico. will he have coverage available for this trip? Use the Cyper Key below to find the four-digit code that unlocks the first room. The first number in the code is the answer to the first question. The second number in the code is the answer to the second question and so on. the nurse working in the recovery room is caring for a client who had a radical neck dissection. the nurse notices that the client makes a coarse, high-pitched sound upon inspiration. which intervention by the nurse is appropriate? an older adult client is admitted with the diagnosis of retinal detachment and is scheduled for laser surgery and scleral buckling procedure. the nurse anticipates which symptom(s) to be exhibited in this client? select all that apply. If a = 3 square root of 3 in the right triangle below, what is the value of b? Table of value Y=-2x+1 Caitlin always keeps very detailed and organized records of the settings and particular set-up that she uses for each photograph she takes. Why might this be helpful to her in the future? a compressed spring is pushing a block across a rough horizontal table. how many force vectors would be shown on a free-body diagram? name them inventory items on an assembly line in various stages of production are classified as o work in process. o merchandise inventory. o finished goods. o raw materials. the increase in the number of units of a product that can be produced by hiring an additional employee is called the product of that employee. which statement is false regarding enhancers? please choose the correct answer from the following choices, and then select the submit answer button. answer choices their role is to activate transcription of specific genes. they can be found upstream and downstream of the transcription start site for a specific gene. enhancers are cell-type specific (can control gene expression differently in different cells of the same organism). in some cases they can replace promoters. all of the statements are true. what techniques do companies use to identify potential applicants within their existing talent pools? (choose every correct answer.)