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28 February, 18:33

The area, A, of a rectangle is 120x2 + 78x - 90, and the length, l, of the rectangle is 12x + 15. Which of the following gives the width, w, of the rectangle?

A. 9x + 4

B. 10x - 19

C. 10x - 6

D. 8x - 6

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Answers (1)
  1. 28 February, 19:47
    0
    The answer will be C. 10x - 6

    (10x-6) (12x+15) = 120x^2+78x-90
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