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4 years ago

HelpQuick 6 tubs hold 125 gallons in all. About how much does each tub hold

Mathematics

2 answers:

Alex Ar [27]4 years ago

5 0

Answer:

Step-by-step explanation:

125 / 6 = 25 thats your answer

jok3333 [9.3K]4 years ago

4 0

Answer:

20.833333 gallons per tub

Repeating Decimal

Step-by-step explanation:

To find the amount of gallons per tub

You can divide 125 by 6 on a calculator/phone or on paper

If you are not so good with multiply guessing ( multipling random numbers until you get the answer) or dividing, you can just add 6 over and over again until you reach your answer

Hope this helps

- IronWolfX

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Answer:

a) Figure attached

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For our case we have this:

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So then the correlation coefficient would be r =0.989

Step-by-step explanation:

Previous concepts

The correlation coefficient is a "statistical measure that calculates the strength of the relationship between the relative movements of two variables". It's denoted by r and its always between -1 and 1.

Solution to the problem

Part a

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After apply natural log for the two variables and create the scatterplot in excel we got the following result on the figure attached.

Part b

And in order to calculate the correlation coefficient we can use this formula:

$r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}$

For our case we have this:

n=10 $\sum x = 75.819, \sum y = 43.5231, \sum xy = 330.0321, \sum x^2 =574.8598, \sum y^2 =192.8274$

$r=\frac{10(330.0321)-(75.81948)(43.5231)}{\sqrt{[10(574.8598) -(75.81948)^2][10(192.8274) -(43.5231)^2]}}=0.989$

So then the correlation coefficient would be r =0.989

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Step-by-step explanation:

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