Question

9.4.27

The length of a rectangle is 9 centimeters less than its width. What are the dimensions of the rectangle if its area is 90 square centimeters

Answer 1

• w=15. l=6

Explanation:

l=w-9

w=w

area=90

area=l×w

90 =w(w-9)

90=w²-9w

turn it to a quadriatic equation