Answer:

Step-by-step explanation:
Remove the parentheses and take out the constansts.

Simplify 7 x 3 to 21.

Use the product rule: 

Simplify 2+5 to 7.

Simplfiy 3 + 8 to 11.

2^3 = 2 x 2 x 2 = 8
your answer is 8
hope this helps
Answer:
5
Step-by-step explanation:
Answer:
(-5, -6)
Consider x= -5 , y= -6
Now put value in to the equation
x + 2y = 2?
(-5)+(-6) = 2?
Step-by-step explanation:
-5-6= 11
=11/2
=5.5
We calculate the sum of all interior angles using this formula 180(n-2) , n=number of sides
180(40-2)= 6840
6840 ÷ 40 = 171