Find the volume of a triangular prism with the following dimensions. round to the nearest cubic unit. triangle base: 5 ft triangle height: 3 ft prism height: 7.5 ft

Find the area of a triangle first

a=1/2bh(triangle)

a=1/2(15)

a=7.5

multiply that by the height of the prism

7.5*7.5

=56.25ft^3

you do the rounding

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: