Question

A rectangular greenhouse has an area of 6,480 square meters. Its length is 120 meters. The width of the greenhouse is______ meters. If each flower bed needs an area of 240 square meters, the whole greenhouse can hold_______ flower beds.

Answer 1

rea = 120 length is 7 more widthLet l= length,w=width(write equation) A= l x w (w+7)(W)=120
w^2+7w -120=0(-8)(15)=-120(-8)+15=7factor(x-8)(x+15)x= 8 or x= -15the measure can't negative then x= 8 it correct answer