SOLUTION: The length of a rectangle is 7 more than twice its width. Its Area is 4. Find the width of the rectangle
Algebra.Com
Question 767049: The length of a rectangle is 7 more than twice its width. Its Area is 4. Find the width of the rectangle
Answer by Cromlix(4381) (Show Source): You can put this solution on YOUR website!
width = x
length = 7 + 2x
Area = length * width
4 = (7 + 2x) * x
4 = 7x + 2x^2
2x^2 + 7x - 4 + 0
(2x - 1)(x + 4) = 0
x + 4 = 0
x = - 4 (No answer x<0)
2x - 1 = 0
2x = 1
x = 1/2
Width = 1/2 units
Length = 8 units.
Hope this helps.
:-)
RELATED QUESTIONS
the length of a rectangle is 7 in. more than twice its width. its area is 270 in. find... (answered by sofiyac)
The Length of a rectangle is 4 yards more than twice its width. If the area is 70 square... (answered by Boreal,MathLover1)
the length of a rectangle is 5 more than twice its width . its perimeter is 70 units.... (answered by JBarnum)
the length of a rectangle is 3 inches more than twice its width. its area is 65 inches... (answered by mananth)
The length of a rectangle is twice as its width. Its area is 6 more than the width. Find... (answered by ankor@dixie-net.com)
FIND THE AREA OF THE RECTANGLE WHICH LENGTH IS 2 FEET MORE THAN TWICE ITS... (answered by checkley77)
The length of a rectangle is 7 in. more than twice its width. If the perimeter of the... (answered by tutorcecilia)
The length of a rectangle is 4 in. more than twice its width. If the perimeter of the... (answered by pizza)
The length of the rectangle is 2cm more than twice its width. If its area is 84cm^2, find (answered by harpazo)