Answer:
X=5
Step-by-step explanation:
-3x+8=-7
-3x=-15
X=5
1. C. Concave pentagon
2. A. 1620°
b/c (11 - 2) × 180 = 1620
3. B. 165°
b/c (24 - 2) × 180 ÷ 24 = 165
4. A. 160°
b/c (18 - 2) × 180 ÷ 18 = 160
x+x+y.y.y = 2x+y^3 ( y cube)
So, The answer is (d)
Answer:
It is the 2nd choice!
Step-by-step explanation:
