cat2521 cat2521

22-09-2018
Mathematics

contestada

A rectangle has a length of 3x + 7 and a width of 2x - 1. If the perimeter of the rectangle is 42 meters. What is the value of x, length, and width?

Respuesta :

confusedwithhw confusedwithhw

22-09-2018

p=w+l
42=(3x+7)+(2x-1)
42=5x+6
36=5x
x=36/5

plug in x

w=3(36/5)+7
w=28.6

l=2(36/5)-1
l=13.4

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