<span>Sum of Interior Angles = (Number of Sides -2) • 180 degrees
2,160 = (sides -2) * 180
2,160 / 180 = sides -2
12 = sides -2
sides = 14
Source:
http://www.1728.org/polygon.htm
</span>
Answer:
it's 13
Step-by-step explanation:
I just took it
Answer:
b. -2x^3 +x^2 +1
Step-by-step explanation:
(x^3 - x^2 + 4) - (3x^3 - 2x^2 +3)
x^3 - 3x^3 = -2^3
-x^2 - (-2x^2) = -x^2 + 2x^2) = x^2
4 - 3 = 1