a length of a rectangle is 5 inches more than the width. the area of the rectangle is 84 sq. inches. find the width of the rectangle a length of a rectangle is 5 inches more than the width. the area of the rectangle is 84 sq. inches. find the width of the rectangle @Mathematics

Question

a length of a rectangle is 5 inches more than the width. the area of the rectangle is 84 sq. inches. find the width of the rectangle  a length of a rectangle is 5 inches more than the width. the area of the rectangle is 84 sq. inches. find the width of the rectangle  @Mathematics

anonymous · Answer

L=W+5
LW=84
W=84/L

W=84/(W+5)
W^2+5W-84=0
Quadratic Equation (find the positive root)
W=(-5+19)/2
W=7

anonymous · Answer

thank you!