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3 years ago

Which study is a survey?

Mathematics

2 answers:

pentagon [3]3 years ago

6 0

Asking a group of randomly selected employees how happy they are with the new employee policy

slavikrds [6]3 years ago

4 0

It's the fourth answer, asking a group of employees how happy they are

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7. Evaluate this expression if x=-2*<br> 3x2 - 4x<br> Need help ASAP Please

patriot [66]

Answer:

Step-by-step explanation:

Evaluate 3 x^2 - 4 x where x = -2:

3 x^2 - 4 x = 3×(-2)^2 - -2×4

Hint: | Evaluate (-2)^2.

(-2)^2 = 4:

3×4 - 4 (-2)

Hint: | Multiply 3 and 4 together.

3×4 = 12:

12 - 4 (-2)

Hint: | Multiply -4 and -2 together.

-4 (-2) = 8:

8 + 12

Hint: | Evaluate 12 + 8 using long addition.

| 1 |

| 1 | 2

+ | | 8

| 2 | 0:

Answer: 20

5 0

3 years ago

For ten school days, the numbers of bikes parked at a school bike rack are 10, 12, 8, 11, 13, 9, 2, 1, 9, and 12.

Lapatulllka [165]

The mean number is 8.7 and the outliers 1 and 2 reduce the mean value

<h3>How to determine the mean number?</h3>

The dataset is given as:

10, 12, 8, 11, 13, 9, 2, 1, 9, and 12.

The mean number is calculated using:

Mean = Sum/Count

So, we have:

Mean = (10+ 12+ 8+ 11+ 13+ 9+ 2+ 1+ 9+12)/10

Evaluate

Mean = 8.7

Hence, the mean number is 8.7

<h3>The outlier and how it affects the mean</h3>

Outliers are relatively far from other data elements of the dataset

In the given dataset, 1 and 2 are far from other data element.

So, the outliers are 1 and 2

Because 1 and 2 smaller than other data elements, they affect the mean by reducing the mean value

Read more about outliers at:

brainly.com/question/3631910

#SPJ1

8 0

2 years ago

A boat moves at a rate of 40 mph in Stillwater if the rivers current flow in a rate of 4 mph how long does it take a boat to tra

Harrizon [31]

A boat moves at a rate of 40 mph in Stillwater if the rivers current flow in a rate of 4 mph how long does it take a boat to travel 22 miles upstream?

upstream rate: 40 mph - 4 mph = 36 mph

how long: 22 miles/36 mph = 0.6 h = 36 minutes

5 0

3 years ago

9th out 10 questions

Sloan [31]

The correct answer is 15.

This is because the relationship between x and y is y=3x, as can be verified by the other points in the table.

3 = 3(1), 6 = 3(2), 24 = 3(8).

When we plug in 5 for x into our equation, we get 3(5), which equals 15.

Therefore, your answer is 15.

Hope this helps!

3 0

3 years ago

The perimeter of a rectangle is no more than 24cm. The two opposite sides are each 4 cm long. What are the possible lengths of t

Klio2033 [76]

if two opposite sides are 4cm each then their total length is 8cm. If the total length is 24cm then to work out the possible lengths of the other two sides you subtract 8 from 24 which gives you 16. A rule in rectangles is that opposite sides are equal so each remaining side would have a length of 16/2 which is 8. To get all the possible answers you have to go through all the possible perimeters (assuming all perimeters have to be whole numbers) between 24(max) and 9(min) and do those steps.

5 0

4 years ago

Read 2 more answers