Answer:
A
Step-by-step explanation:
Rectangle:
L x W = area
13 x 9 = 117cm
Triangle:
L x W/2 = area
11 x 5 = 55
55/2 = 27.5
117 + 27.5 = 144.5cm²
Step-by-step explanation:
The additive inverse of something is just what the certain number needs to equal 0. In this case 3+5=8 inches total. In order to get 8 inches to 0 you need to add -8 to 8. So the additive inverse is -8 inches (Always remember your units, in this case inches) Hope this helped :)