SOLUTION: the area of a rectangle wall of a barn is 20 feet. its length is 6 feet longer than twice its width. find the length and width of the wall of the barn

Question 942960: the area of a rectangle wall of a barn is 20 feet. its length is 6 feet longer than twice its width. find the length and width of the wall of the barn
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
the area of a rectangle wall of a barn is 20 sq feet.
its length is 6 feet longer than twice its width.
find the length and width of the wall of the barn.
--------------------
width:: x
length:: 2x+6
------
Equation:
length * width = 20 sq ft
---
x(2x+6) = 20
2x^2 + 6x - 20 = 0
x^2 + 3x - 10 = 0
Factor:
(x+5)(x-2) = 0
Positive solution::
x = 2 ft (width)
2x+6 = 2*2+6 = 10 ft (length)
---------------
Cheers,
Stan H.
---------------
RELATED QUESTIONS
The area of a rectangular wall of a barn is 198 square feet. Its length is 4 feet longer (answered by checkley71)

The area of a rectangular wall of a barn is 108 square feet. Its length is 6 feet longer... (answered by oberobic)

The area of a rectangular wall of a barn is 260 square feet. Its length is 6 feet longer (answered by ikleyn)

THE AREA OF A RECTANGULAR WALL OF A BARN IS 80 SQUARE FEET. ITS LENGTH IS 6 FEET LONGER... (answered by clearyjohn225)

The area of a rectangular wall of a barn is 280 square feet. Its length is 8 feet longer (answered by harpazo)

The area of a rectangular wall of a barn is 72 square feet. It's length is 10 feet longer (answered by stanbon)

the area of a rectangle wall of a barn is 171 square feet. Its length is 10 feet longer... (answered by jorel1380)

The area of a rectangular wall of a barn is 32 square feet. Its length is 12 feet longer... (answered by TimothyLamb)

The area of a rectangular wall of a barn is 54 square feet. its length is 12 feet longer... (answered by Cromlix)