The length of a rectangle is 4 inches less than twice its width. if the area of the rectangle is 70 square inches, what are its dimensions

Length = 10 inches, Width = 7 inches

Step-by-step explanation:

Area = L x W

Area = 70 square inches

Length = 2W - 4

70 = 2w - 4 x w

70 = 2w^2 - 4w

2w^2 - 4w = 70

2w^2 - 4w - 70 = 0

Factor

(2w + 10)(w-7) = 0

w = 7

70 = L x 7

L = 10

both equations and proportions are better.

hello :

70y^8 + 30y^6 = 2 ( 35 y^8 + 15y^6)

the lenght is : 35 y^8

the width is : 15y^6