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4 years ago

Which expression represents the average of three test scores?

Mathematics

2 answers:

jek_recluse [69]4 years ago

3 0

The answer is the third option. add up all the test scores and divide them by the number of people whose scores you added
which would be three people

guajiro [1.7K]4 years ago

3 0

Hi.

The mean of 3 test scores can be represented as:

<em /> $\frac{x + y + z }{3}$

~

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natka813 [3]

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I just went with the slope. So I am not sure about the y-int.

Slope= y2 -y1 over x2-x1

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—————————- (over)
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3 years ago

Question 4

Elanso [62]

Answer:

a $A = 30 + 0.45 n$

b $A = 90.3$

c 0 customers

Step-by-step explanation:

Given

$Base\ Amount = 30$

$Rate = 0.45$ per customer

Solving (a): Amount (A) on n customers

This is calculated as:

$A = Base\ Amount + Rate * n$

$A = 30 + 0.45 * n$

$A = 30 + 0.45 n$

Solving (b): Amount on 134 customers

In this case: n = 134

So:

$A = 30 + 0.45 * 134$

$A = 30 + 60.3$

$A = 90.3$

Solving (c): Customers at noon.

At noon, the amount is 30.

So:

$A = 30 + 0.45 n$

$30 = 30 + 0.45n$

Collect like terms

$0.45n = 30 - 30$

$0.45n =0$

$n = 0$

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3 years ago

Find the volume of the pyramid. Round to the nearest tenth if necessary.

Ymorist [56]

Answer:

53.7

Step-by-step explanation:

The area of the rectangular base is 7(2.3)=16.1.

So, the total volume is (1/3)(16.1)(10), which is about 53.7

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2 years ago

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Answer:

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Step-by-step explanation:

Good luck hope it's right

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2 years ago