blondie3105 blondie3105

23-12-2017
Mathematics

contestada

The area of a rectangle is 42 m2 , and the length of the rectangle is 5 m more than twice the width. find the dimensions of the rectangle.

Respuesta :

jorel1380 jorel1380

01-01-2018

Let w and 2w+5 be the width and length. Then:
w(2w+5)=42
2w²+5w-42=0
(2w-7)(w+6 )=0
w=7/2 or -6
If the width is 7/2 m, then the length is 12 m
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