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27-04-2015
Mathematics

Answered

The are of a rectangle is 54 cm. The length is 2 cm more than a x and the width is 5 cm less than twice x. Solve for x. Round your answer to nearest whole number

Answer :

27-04-2015

Given that:

(x+2)(2x-5)=54

We have:
[tex]2x^2-x-64=0[/tex]

Using the quadratic formula, this is approximately 5.66, so rounded to the nearest whole number, our answer is 6.

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