Answer:
For number 7 it is 6x*4
For number 8 it is 3(6+4)
Have a great day :)
Answer: 
a=-3
b=-9
Step-by-step explanation:

Answer:
A is estimated to 110.11
Step-by-step explanation:
Area of a regular pentagon = pa/2
p= perimeter
a= the apothem
Calculate it from the side length: p= 5s
5
Should be your answer
Good luck
Answer:
I think it is -10
Step-by-step explanation:
Using a^m*a^n=a^(m+n)
b=(m+n)
In this question,
m= -8 and n= -2
so b= (m+n)=(-8+-2) = -10