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Mathematics 14 Online
OpenStudy (gokuporter):

http://prntscr.com/5vzdaq

OpenStudy (anonymous):

Pythagorean Theorem.

OpenStudy (anonymous):

First off, what is 9^2 and what is 12^2? @Gokuporter

OpenStudy (gokuporter):

9^2 is 18 12^2 is 24

OpenStudy (anonymous):

And your answer is incorrect. :P

OpenStudy (anonymous):

@Gokuporter 9^2 isn't 9 x 2. 12^2 isn't 12 x 2. 9^2 is multiplying 9 to itself 2 times. So that would be 9 x 9, and 12^2 would be 12 x 12. So what are your answers?

OpenStudy (gokuporter):

81 and 144

OpenStudy (anonymous):

Yes, so can you add those?

OpenStudy (igreen):

Actually we can set up a proportion: \(\dfrac{5}{4} = \dfrac{x}{12}\) Can you cross multiply?

OpenStudy (anonymous):

We're already 80% done with this, so we'll just finish up.

OpenStudy (anonymous):

@Gokuporter Can you add 81 + 144?

OpenStudy (gokuporter):

15

OpenStudy (anonymous):

What? Try again.

OpenStudy (igreen):

Cross multiplying will give us: \(4 \cdot x = 4x\) \(5 \cdot 12 = 60\) Then we have: \(4x = 60\) \(x = 15~\color{lime} \checkmark\)

OpenStudy (gokuporter):

to igreen :/

OpenStudy (igreen):

Nice work @Gokuporter

OpenStudy (anonymous):

@iGreen Please don't give direct answers.

OpenStudy (anonymous):

\(\color{blue}{\text{Originally Posted by}}\) @iGreen Cross multiplying will give us: \(4 \cdot x = 4x\) \(5 \cdot 12 = 60\) Then we have: \(4x = 60\) \(x = 15~\color{lime} \checkmark\) \(\color{blue}{\text{End of Quote}}\)

OpenStudy (igreen):

That's not a direct answer, it's called confirming his answer.

OpenStudy (igreen):

Why do you think the checkmark is there?

OpenStudy (anonymous):

@ganeshie8

OpenStudy (anonymous):

Because It's the final answer.

OpenStudy (igreen):

Go ahead, he's not gonna do anything..because it's not a direct answer.

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