12^2 +b^2 = 20^2 because of the Pythagorean theorem
144 + b^2 =400
B^2 =256
B=16
The answer is B u put them all in a fraction and put them in simpliest form and all the answers in B come up to 7 over 8
-96-(-86) -10 -2
------------= ------= -----= -2
82-87 -5 1
