SOLUTION: the length of a rectangle is is 10m less than twise the width..what are dimension s of this rectangle if the area is 72m^2

Question 401529: the length of a rectangle is is 10m less than twise the width..what are dimension s of this rectangle if the area is 72m^2
Answer by Tatiana_Stebko(1539) (Show Source): You can put this solution on YOUR website!
Let x is the width of a rectangle,
The length of a rectangle is 10m less than twice the width, so the lenght is m
The area of rectangle is , from text the area is 72m^2
equation

divide both sides by 2
quadratic equation

or
or
or
or <0,extraneous root of the equation does not satisfy the conditions of the problem
So width of a rectangle is 9 m, the length of a rectangle is m
Answer 9 m and 8 m
RELATED QUESTIONS
The length of a rectangle is 4m^3n^7. If the area is 72m^15n^10, what is the... (answered by MathLover1)

Length of a rectangle is 6 inches less than twice the width if the area of the rectangle... (answered by ewatrrr)

the perimeter of a rectangle is 56m, the length is 10m more than twice the width, find... (answered by checkley77)

the area of a rectangle is 96 square centimeters. if the width of the rectangle is 4... (answered by mananth)

9. The area of a rectangle is 45 square cm. If the length is 4 cm greater than the... (answered by Molly27,checkley77)

The area of a rectangle is 45 square cm. If the length is 4 cm greater than the width,... (answered by Jk22)

The area of a rectangle is 45 square cm. If the length is 4 cm greater than the width,... (answered by algebrahouse.com)

The area of a rectangle is 45 square cm. If the length is 4 cm greater than the width,... (answered by chessace)

The area of a rectangle is 77m^2, and the length of the rectangle is 10m less than three... (answered by josgarithmetic,ikleyn)