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Mathematics 15 Online
OpenStudy (mathhelp200066):

PLEASE CHECK MY ANSWER WILL MEDAL AND FAN

OpenStudy (mathhelp200066):

I think it's D

jimthompson5910 (jim_thompson5910):

|dw:1467330807237:dw|

jimthompson5910 (jim_thompson5910):

|dw:1467330890444:dw|

jimthompson5910 (jim_thompson5910):

|dw:1467330966132:dw|

jimthompson5910 (jim_thompson5910):

use the pythagorean theorem to find x a^2+b^2 = c^2 20^2+21^2 = x^2

OpenStudy (mathhelp200066):

= 841

jimthompson5910 (jim_thompson5910):

now take the square root of that

OpenStudy (mathhelp200066):

= 29

OpenStudy (mathhelp200066):

OH it's C! Thanks!

jimthompson5910 (jim_thompson5910):

which is the final answer |dw:1467331198241:dw|

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