Answer: C— 9 m
Steps:
a^2 + b^2 = c^2
12^2 + b^2 = 15^2
144 + b^2 = 225
b^2 = 81
b = 9
82... because 24/3 is 8 and 6/3 is 2
Therefore you get 82
If you mean like half then 31?
You use new over old
1.09
_____ then times that by
0.87. 100= 125.287356
Next put that to the nearest 10th which is 130%
