C I think not sure I think tho.
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
Try 147? it may be wrong but i though that with that type of thing the middle one is supposed to equal double the bottom.
Answer: 165
Step-by-step explanation:
5 X( 15+18) = 5 X 15 + 5 X 18 = 75 + 90 = 165.
Distributive law = a.(b + c) = a. b + a. c
