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Mathematics 19 Online
OpenStudy (anonymous):

What is the value of x? http://static.k12.com/calms_media/media/1299500_1300000/1299574/1/b5bfb6603c613db677cfc071f4fb208e7074c529/143794.jpg

OpenStudy (kainui):

Do you know the pythagorean theorem?

OpenStudy (anonymous):

not really

OpenStudy (anonymous):

i think it's a^2 + b^2 = c^2

OpenStudy (anonymous):

so 5^2 + 5^2 = (the answer)^2?

OpenStudy (kainui):

Exactly! Keep going with it. =)

OpenStudy (anonymous):

ok i think 25 + 25 right?

OpenStudy (kainui):

Yeah you're on the right track.

OpenStudy (anonymous):

now comes the square root of 50

OpenStudy (anonymous):

7

OpenStudy (anonymous):

or 5sqr2?

OpenStudy (anonymous):

like this: 5√2

OpenStudy (anonymous):

am i right? @Kainui

OpenStudy (kainui):

Yep, perfectly right. In fact how I'd get there is like this: \[5^2+5^2=(answer)^2\]\[\sqrt{5^2+5^2}=answer\]\[\sqrt{2*5^2}=answer\]\[5\sqrt{2}=answer\] So here I never even worried about 25+25. I hope this makes it a little quicker for you next time. =)

OpenStudy (anonymous):

thank you!

OpenStudy (kainui):

Glad I could help. You're welcome.

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