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OpenStudy (anonymous):
Which set of side lengths defines a right triangle? A. 4, 8, 9 B. 5, 9, 10 C. 6, 10, 13 D. 7, 24, 25
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OpenStudy (harley1312):
a right angle is 90 degrees so I'm guessing which ever one adds up to 90 is the correct answer.
OpenStudy (anonymous):
C^2=a^2+b^2
OpenStudy (harley1312):
sorry if this is incorrect but I think it's D.
OpenStudy (anonymous):
9^2=4^2+8^2 ? 81=16+64
OpenStudy (anonymous):
so A is not
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OpenStudy (anonymous):
It's D, 49+576=625 and 25^2 is 625. Thanks for the help!
OpenStudy (anonymous):
YW
OpenStudy (anonymous):
yes D is right
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