The length of a rectangular table cloth is 2 ft more than the width. If the table cloth is w feet wide, express the
perimeter as a function of the width.
Perimeter of a rectangle
= 2(width) + 2(length) w = width w + 2 = length {length is 2 more than the width} P(w) = 2w + 2(w + 2) {substituted width and length into perimeter} = 2w + 2w + 4 {used distributive property} P(w) = 4w + 4 {combined like terms} Ask Algebra House Comments are closed.
|
Examples
All
|