The right pengtagonal prism has a height of 14 units, the volume of the prism is 840 cubic unit. what is the perimeter of the base.

30

Step-by-step explanation:

Because you can break the pentagonal base into triangles and the formula to find the area of a triangle is 1/2 Bh so 840/14 = 60 divided by 1/2 = 30

(x+7) / (x–3)

Step-by-step explanation:

(x^2+3x-28) / (x^2-7x+12 )

(x^2 + 7x – 4x – 28) / (x^2 – 4x - 3x + 12)

= [x(x+7) – 4(x+7)] / [x(x-4) – 3(x-4)]

= (x+7) (x-4) / (x-4) (x-3)

= (x+7) / (x–3)

Simplify means to reduce the size of any number. In this factorization math, we have to simplify those factors, and then divide (x-4) from both denominator and numerator to simplify the result.