Answer:
D
Step-by-step explanation:
65.8 + 13.4 = 79 .2. So the answer is c
The second one. The octagon.
This is because all of the other choices are equal sided, which makes them a regular polygon.
Steps:
37-(x+8)=32
Subtract 37 from both sides
37-(x+8)-37=32-37
Simplify
-(x+8)=-5
Divide both sides by -1
-(x+8)/-1=-5/-1
Simplify
x+8=5
Subtract 8 from both sides
x+8-8=5-8
Simplify
x=-3