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roxa0sgom0ebabell roxa0sgom0ebabell
  • 25-01-2016
  • Mathematics
Answered

The area of a rectangular floor is represented by 9x^2 + 15x square feet and the width of the floor is 3x feet. Which expression represents the length of the floor?

A8x ft
B(3x + 5) ft
C(3 + 5x) ft
D(9x2 + 12x) ft

Verified Answer :

Anonymous Anonymous
  • 25-01-2016

To work this out, we must divide the area by the width
(9x² + 15x) / 3x
First 9x²
9x² / 3x = 3x
Then 15x
15x / 3x = 5

3x + 5 ft

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