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KATRIN_1 [288]
3 years ago
15

Please help this is urgent and it's due today.

Mathematics
1 answer:
Llana [10]3 years ago
4 0
What is ?
there isn’t a picture
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The hourly wages of a sample of 130 system analysts are given below.
atroni [7]

Answer: b. 30%

Step-by-step explanation:

  • A measure of relative variability is known as coefficient of variation. It is the ratio of the standard deviation to the mean.

i.e. CV=\dfrac{\sigma}{\mu}

Given: mean =  \mu=90

Variance = \sigma^2 = 729

\sigma=\sqrt{729}=27

Now, CV=\dfrac{27}{90}=0.3

in percent , CV= 0.3\times100\%= 30\%

Hence, correct option is  b. 30%.

8 0
3 years ago
Place values for 249.673
irakobra [83]
Hi! 

This question is worded a little funny, but i think in understand what it's asking. Forgive me if i'm wrong. 

Place values in math are pretty self-explanatory. It's just asking you what place each number is in.

For example:

If you were to write the number 12, the 1 would be in the tens place and the 2 would be in the ones place. 

When speaking about decimals, you pretty much just have to add the letters 'th' to the end of the place value, but instead of decreasing as the numbers grow smaller, you increase and the ones place doesn't exist. 

So in this case:

With 249.637, 2 is in the hundreds place. 4 is in the tens place. 9 is in the ones place. 6 is in the tenths place. 7 is in the hundreths place. 3 is in the thousandths place. 

Hope this helps :)
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3 years ago
Find the surface area for the given cylinder with the radius 6 and the height 24
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1130.97 is the surface area of the cylinder
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How do I solve <br> 2.75 + 0.003 + 0.158
nikklg [1K]
2.750 + 0.003 + 0.158

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<span>= 2.911</span>
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20,ooo pounds equal how many English tons?
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