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Nikitich [7]
3 years ago
9

Help please I’ll mark as brainliest!

Mathematics
1 answer:
77julia77 [94]3 years ago
5 0

Answer:

I think its B cause i was solving it and my answer came close to letter B

Step-by-step explanation:

i tried

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Brian’s desk is 3 feet 7 inches long. Given that 1 inch is approximately 2.54 centimeters, about how many centimeters long is th
Alborosie

I hope this is right but I think It’s c

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A class of 40 students took a test 20 students had an average score of 65. the other students had an average score of 52. what i
Korolek [52]

Answer:

One: 58.5

Two 36.6

Step-by-step explanation:

One

20 students * 65 = 1300 This is the total score of all 20 students. They may not all get 65, but 1300 is what their average total is.

20 students * 52 = 1040

The total score of all 40 students was 1300 + 1040 = 2340

The average for the entire class was 2340 / 40 = 58.5

Two

This question is done almost the same way.

Supposes the total number of members is 100. That means that 28 of them are men

28 * 33 = 924     This is the total age for the men

100 - 28 = 72        Out of 100, 72 of the people there are women.

72 * 38 = 2736

The total number of years of all of the members is

924 + 2736 = 3660      

The average age of all members is 3660/100 = 36.6

Why did I pick 100 as the total membership? It is because a percentage is number out of 100. Am I allowed to invent things like that? Sure. I'm just using the definition of a percentage.

The average will make it come out the same.

7 0
3 years ago
A telemarketing firm is monitoring the performance of its employees based on the number of sales per hour. One employee had the
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Answer:

First quartile = 3.5

Third quartile = 6.5

Step-by-step explanation:

Sales for last 20 hours :

3, 4, 5, 5, 6, 7

Using the data given :

The first quartile, Q1 ;

Q1 = 1/4(n+1)th term

n = 6

Q1 = 1/4(6 + 1)th term

Q1 = 7/4 = 1.75 th term

(3 + 4) / 2 = 7/2 = 3.5

The third quartile, Q3:

Q3 = 3/4(n+1)th term

n = 6

Q3 = 3/4(6 + 1)th term

Q3 = 21/4 = 5.25th term

(5th + 6th) term / 2

(6 + 7) / 2 = 13/2 = 6.5

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3 years ago
How would you describe the relationship between miles driven per week and car age, as shown in the scatterplot below? Choose eve
QveST [7]

Answer:

Negative and nonlinear

Step-by-step explanation:

hope this helped

5 0
2 years ago
The slope of the graph of the equation y=2x-2 is 2. What is the y-intercept?
Marina86 [1]
  The y-intercept is the "b" in the slope-intercept form of y=mx+b. Based on the equation you wrote, you can substitute each of your known values into the slope-intercept form.
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3 years ago
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