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qaws [65]
3 years ago
9

Can anybody show me the steps to answering this question? 7x - 2z = 4 - xy (solve for x)

Mathematics
1 answer:
Fed [463]3 years ago
8 0

Answer: 2z+4/y+7

Step-by-step explanation:

We are trying to solve for x

7x-2z=4-xy

Add xy to both sides:

7x-2z+xy=-xy+4+xy= xy+7x-2z=4

Then you add 2z to both sides:

xy+7x-2z+2z=4+2z

xy+7x=2z+4

Then you factor out variable x

x(y+7)=2z+4

You divide both sides by y+7

x(y+7)/y+7= 2z+4/y+7

Which we would get x=2z+4/y+7

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21

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3 0
3 years ago
Read 2 more answers
(c) Use a calculator to verify that Σ(x) = 64, Σ(x2) = 1118, Σ(y) = 628, Σ(y2) = 87,982, and Σ(x y) = 9,627.
amid [387]

The correlation based on the computation is 0.97.

<h3>How to compute the value?</h3>

It should be noted that the question is that we should simply calculate the correlation which is r.

The correlation will be:

= Σ(x y) / (Σ(x²) × Σ(y²)

= 9627/✓(1118 × 87982)

= 9627 ✓98363876

= 9627/9917.86

= 0.97

Learn more about computations on:

brainly.com/question/4658834

#SPJ1

7 0
1 year ago
PLZ HELP!!!!!! I THINK ITS TRUE BUT IM NOT SURE
suter [353]
Yes it is true! it is true because two different numbers go to the same number, if it was false it would have to be the one number to two different numbers.

Hope that made sense!
5 0
3 years ago
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