Question

The length of a box is 5 more than the width and the height is 2 less than the width. If the volume is equal to 150 cubic feet, what are the measurements for each side.

Answer 1

@dtan5457 @mathrulezz @aum @Abmon98 @pooja195 @welshfella @ineptAtMath

Answer 2

let the width be x , then height = x -2 and the length = x + 5
vilume = w*h*l so
x(x-2)(x + 5) = 150
you need to solve this for x

Answer 3

I dont think i did it right i ot x^3+3x^2-10x=150

Answer 4

x^3 + 3x^2 - 10x - 150 = 0

Answer 5

these are not straight forward to solve but as the last term is 150 and 5 is a factor try plugging x = 5 into the equation and see if you get 0

Answer 6

125 =75 - 50 - 100 = 0!!!!

Answer 7

yea that works

Answer 8

* 125 + 75

Answer 9

got it1

so width = 5 and you can work out the rest easily

Answer 10

so the length is 10 right?

Answer 11

yes

Answer 12

great thanks

Answer 13

yw