nanciramirez nanciramirez

02-12-2019
Mathematics

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Length of rectangle is 5yd more than double the width,and the area of the rectangle is 42yd.find the dimension of the rectangle.

Respuesta :

adelodunoba85 adelodunoba85

03-12-2019

Answer:

width =6yd

length=17yd

Step-by-step explanation:

w=x

L=2x+5

area=L*w

42=x(2x+5)

[tex]42=2x^{2} +5x[/tex]

[tex]2x^{2} +5x-42=0[/tex]

[tex]2x^{2} -12x+7x-42=0[/tex]

2x(x-6)+7(x-6)=0

(x-6)(2x+7)=0

x-6=0

x=6

L=2x+5=2*6+5=12+5=17

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