What is the length of side x? If necessary, round your answer to two decimal places.
( Picture attached below )

Question

What is the length of side x? If necessary, round your answer to two decimal places.
( Picture attached below )

anonymous · Answer

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anonymous · Answer

@hartnn I know the setup is a^+b^2=c^2 but how do I know to set the numbers up in the right spot?

anonymous · Answer

@agent0smith Can you help me set this up?

agent0smith · Answer

c^2 is always the hypotenuse (longest side)

anonymous · Answer

So is the setup a^2+7^2=21^2?

agent0smith · Answer

Yes, but the image uses x^2 not a^2, but it doesn't really matter which you choose.

anonymous · Answer

Give me a min to work it out then can you check it for me?

agent0smith · Answer

k

anonymous · Answer

okay i got square root 19.79 but says if necessary round your answer to two decimal places which mean that would be 19.80 correct? which is right?

agent0smith · Answer

Yeah, round to 19.8

anonymous · Answer

okay thanks! Really appreciated it!