What is the answer to this?

Step-by-step explanation:

Each of the four sides of this triangular prism has height 8 m and base 12 m.  The area of each face this thus A = (1/2)(base)(height), or

A = (1/2)(12 m)(8 m) = 48 m^2.   The total side area is thus 192 m^2.

This is the surface area.  If we want to include the base area, that would be another (12 m)^2 , or 144 m^2.

a) y = -3x +2

b) y = 1/2x -6

these 2 can be combined into one equation.

-3x +2 = .5x -6

8 = 3.5x

x = 8 / 3.5 = 2.2857142857

y = -3 * (8 / 3.5) +2

y = (-24 / 3.5) + 2

y = -4.8571428571

step-by-step explanation: