Problema Solution
the width of a rectangle is 6 kilometers less than twice its length. if its area is 140 square kilometers find its dimensions.
Answer provided by our tutors
let
x = the length of the rectangle, x>0
2x - 6 = the width of the rectangle (6 kilometers less than twice its length)
A = 140 km^2
A = length*width
x(2x - 6) = 140
by solving we find:
x = 10 km
click here to see the step by step solution of the equation:
2*10 - 6 = 14 km
the dimensions of the rectangle are: 10 km and 14 km.