Use an algebraic equation to solve the problem. a rectangle is 3 times as long as it is wide. the perimeter is 60 cm. find the dimensions of the rectangle. round to the nearest tenth if necessary.

It is given in the question that a rectangle is 3 times as long as it is wide. the perimeter is 60 cm.

Let the width of the rectangle be x cm. And length is 3 times of width, therefore length is 3x cm .

And perimeter is the sum of all sides. That is

Dividing both sides by 8,

Therefore width is 7.5 cm and length is 3 times of it, that is length is 22.5 cm .

y -5 = (-1/4)(x + 8)

step-by-step explanation: