Question

PLEASE HELP ME!!!! PLEASE PLEASE PLEASE 100 Points. A box in the shape of a rectangular prism has a volume of 72 cubic feet. The box has a length of x feet, a width of (x − 1) feet, and a height of (x + 9) feet. Find the dimensions of the box.

Answer 1

Answer:

3ft × 2ft × 12ft

Step-by-step explanation:

(x + 9)(x - 1)(x) = 72

x³ + 8x² - 9x - 72 = 0

For the first root, use trial method.

Try factors of 72.

x = 3 satisfies the equation

If x = 3,

x + 9 = 12

x - 1 = 2

Dimensions are: 3 ft × 2ft × 12ft