Hello,
Shall we begin?
-5x = 45 *(-1)
5x = - 45
x = - 45/5
x = -9
<span>Answers: x = -9</span>
Im pretty sure it’s a rectangle
Step-by-step explanation:
Surface Area of Figure = Area of 4 triangular sides + Area of Base
=

7x + 2 = -12
- 2 - 2
7x = -14
7 7
x = -2