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Irina18 [472]
3 years ago
12

Kristin wants to ask the managers of the fast food restaurants in a large city “How do you retain employees?” What condition mus

t be true to justify surveying only a sample of the managers instead of surveying the entire population of managers?
The population is small.
The population is diverse.
The population is not the target of the survey question.
The population is expensive and time-consuming to survey.
ANSWER BELOW HERE
D - The population is expensive and time-consuming to survey.
Mathematics
1 answer:
Pani-rosa [81]3 years ago
3 0

Answer:

d

Step-by-step explanation:

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A sample of 300 subscribers to a particular magazine is selected from a population frame of 9,000 subscribers. If, upon examinin
professor190 [17]

Answer:

C

Step-by-step explanation:

3 0
2 years ago
The drama club is having a car wash as a fundraiser. They wash x cars at $5 each
Galina-37 [17]

<u>Answer:</u>

x + y ≥ 26 + 15

5x + 8y ≥ 250 (see below)

Step-by-step explanation:

First, write an equation to represent the total cost to wash cars:

$5x = cost for cars

Then, write another for trucks:

$8y = cost for trucks

If the question is saying that they will wash at least 26 cars and 15 trucks, that means they could wash more. This means that we'll need an inequality:

This inequality represents that the total number of cars and trucks they wash will be at least—which means that it is equal to or greater than—than the amount given:

x + y ≥ 26 + 15

Any equation or inequality with two unknowns is not solvable, meaning we need a system of equations:

If they make at least $250, that means that we need to combine the costs of the cars and trucks to make an inequality:

5x + 8y ≥ 250

Now you have your system of equations:

x + y ≥ 26 + 15

5x + 8y ≥ 250

8 0
3 years ago
What is the first step in solving this system of equations?
DiKsa [7]

Step-by-step explanation:

Multiply the first equation by 7 and the second by 2

8 0
3 years ago
HELPPP!!!! I DONT HAVE MUCH TIME TO TURN THIS IN!!!!!
Cloud [144]

Answer:

AC=DF

Step-by-step explanation:

You just need that the last sides are congruent so that we know the two triangles are congruent through SSS. Hope this helps!!

4 0
3 years ago
Point R is on line segment QS. Given QS= 5x-2, QR= 3x-6, and RS=4x-2, determine the numerical length of RS.
pashok25 [27]

Answer:

The numerical length of RS is 10 units

Step-by-step explanation:

* <em>Lets explain How to solve the problem</em>

- Point R is on line segment QS

- The length of QS is (5x - 2)

- The length of QR is (3x - 6)

- The length of RS is (4x - 2)

- <em>The length of QS is the sum of the lengths of QR and RS</em>

∵ QS = QR + RS

∴ (5x - 2) = (3x - 6) + (4x - 2)

- Simplify the right hand side by adding like terms

∴ 5x - 2 = (3x + 4x) + (-6 + -2)

∴ 5x - 2 = 7x + -8 ⇒ (+)(-) = (-)

∴ 5x - 2 = 7x - 8

- Add 8 for both sides

∴ 5x + 6 = 7x

- Subtract 5x from both sides

∴ 6 = 2x

- Divide both sides by 2

∴ x = 3

- <em>To find the length of RS substitute the value of x in its expression</em>

∵ RS = 4x - 2

∵ x = 3

∴ RS = 4(3) - 2 = 12 - 2 = 10

∴ The numerical length of RS is 10 units

8 0
3 years ago
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