SOLUTION: the width of a rectangle is 8 cm less than its length. if the length is x cm and the area 105 cm^2. form an equation in x and solve
Algebra.Com
Question 1078808: the width of a rectangle is 8 cm less than its length. if the length is x cm and the area 105 cm^2. form an equation in x and solve
Answer by jorel1380(3719) (Show Source): You can put this solution on YOUR website!
If x is the length, then the width would be x-8. So:
x(x-8)=105
x²-8x-105=0
(x+7)(x-15)=0
x=15 or -7
The length is 15 cm.; the width is 7 cm. ☺☺☺☺
RELATED QUESTIONS
Two rectangles A and B each have an area of 11 cm^2
The length of rectangle A is x cm... (answered by josmiceli,ikleyn,MathTherapy)
The length of a rectangle is 6 cm. greater than its width. If the width is 2 cm less and... (answered by ikleyn)
A rectangle is 8 cm longer than it is wide. Find the dimensions of the rectangle if its... (answered by Grinnell,mananth)
The length of rectangle is 8 cm more than twice its width. If the area is 960 cm^2. Find... (answered by graphmatics)
the length of a rectangle is 8 cm less than twice its width. Find the dimensions of the... (answered by nyc_function)
the width of a rectangle is 8 cm. less than its length and the area is 20 sq cm. what are (answered by Fombitz)
The length of a rectangle is 8 cm more than its width. If its perimeter is 56 cm, find... (answered by oscargut)
The width of a rectangle is 5 cm less than half it length. Its area is 72 cm squared.... (answered by josgarithmetic,MathTherapy)
A rectangle has length (x+5)cm and width (x-2)cm. Its area is 60 cm^2. Write a quadratic... (answered by josgarithmetic)