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1 year ago

Find the mean of the data set: {8, 10, 12, 15, 15, 18}

Mathematics

2 answers:

hoa [83]1 year ago

4 0

Answer: 13

Step-by-step explanation:

First, you add them all up which is 8+10+12+15+15+18 which is 78. Then, you divide by how much number there is which here is 6. So, I divided 78 by 6 and got 13.

BARSIC [14]1 year ago

4 0

Answer:

Step-by-step explanation:

Add all the numbers and divide by how many numbers are in the set:
8+10+12+15+15+18=78

78/6=13

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I’m confused on this one

ad-work [718]

The question is "What is the scale of the model to the actual statue"

That means you must put 2/15.

2 being the model

15 being the actual statue

Take that fraction and equal is to 1/x.

Multiply 15 to 1 and 2 to x.

In the end, to solve, you divide 15 by 2x.

The answer is X=7.5

1 : 7.5

7 0

2 years ago

Last one promise.Please help me.

ella [17]

The answer is 240.5 hope you get the question

3 0

2 years ago

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A study has indicated that the sample size necessary to estimate the average electricity use by residential customers of a large

Zanzabum

Answer:

$\sigma=547.1125$

Step-by-step explanation:

-The margin of error is calculated using the formula:

$ME=z_{\alpha/2}\times \frac{\sigma}{\sqrt{n}}\\\\$

-We substitute the values, n=900 and ME=30 in the formula to solve for standard deviation:

$ME=z_{\alpha/2}\times \frac{\sigma}{\sqrt{n}}\\\\\\30=1.645\times\frac{\sigma}{\sqrt{900}}\\\\\sigma=\frac{30^2}{1.645}\\\\=547.1125$

Hence, the population standard deviation is 547.1125

7 0

3 years ago

Simplify completely the quantity x squared plus x minus 12 over quantity x squared minus x minus 20 divided by the quantity 3 x

amm1812

Answer:

Answer: 4(x+1) over (x-5)

Step-by-step explanation:

4 0

2 years ago

The cost of three dozen of eggs at thirty pesos per dozen in numerical expression<br>

evablogger [386]

3 x 30

It cost 30 pesos per dozen and they are buying 3 dozen

3 x 30 = 90

4 0

3 years ago