The width of a rectangle is one half it's length. the perimeter is 54 cm. what are the width and the length of the rectangle?

If the width is w and the length is l, we have l/2=w and 2w+2l=54 (given the formula for the perimeter of a rectangle). Plugging l/2=w into the second equation, we have 2(l/2)+2l=54=l+2l=3l. Dividing both sides by 3, we get l=18. Since w=l/2, w=18/2=9

Distance=slopeslope is -2/4which equals-1/2the distance between these two points is -1/2