Solve.
-The width of a rectangle is 6 kilometers less than twice its length. If its area is 56 square kilometers, find the dimensions of the rectangle.
A)length = 4 km, width = 2 km
B)length = 7 km, width = 8 km
C)width = 7 km, length = 8 km
D)length = 3 km, width = $\frac { 56 } { 3 }$ k km

Question

Quizplus · Accepted Answer

Let the length be $ x $ km. Then the width is $ 2x - 6 $ km. The area is given by $ x(2x - 6) = 56 $. Solving $ 2x^2 - 6x - 56 = 0 $ gives $ x = 7 $ km (length) and width $ = 8 $ km.

Solve -The Width of a Rectangle Is 6 Kilometers Less 563\frac { 56 } { 3 }356​

Solve
-The Width of a Rectangle Is 6 Kilometers Less $\frac { 56 } { 3 }$