SOLUTION: the volume of a rectangular box is 240cu units. How do you find the length and width when you have the h=5, w=x, l=x+2

Algebra ->  Volume -> SOLUTION: the volume of a rectangular box is 240cu units. How do you find the length and width when you have the h=5, w=x, l=x+2      Log On


   

Question 854417: the volume of a rectangular box is 240cu units. How do you find the length and width when you have the h=5, w=x, l=x+2
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

240 = (x+2)(x)(5)

 48 = x^2 + 2x

   x^2 + 2x - 48

  (x+8)(x-6) = 0    (Tossing out the negative solution for unit measure)

         x = 6 units, the width.  The length is 8 units