Step-by-step explanation:
1099cm might be lol I am poor in math
<span>7x - 2(x + 1) = 6x + 14
</span><span>7x - 2x - 2 = 6x + 14
5x - 2 = 6x + 14
6x - 5x = -2 - 14
x = -16
answer
</span><span>C) -16</span>
The answer is A. A, D the reason being, is because polygons have sides C, and B have no sides so we can eliminate those immediately.
Answer: 45
Step-by-step explanation:

The numbers are 9,10,11 . the sum being 20 :) hope this helped have a great day