The length of a rectangle is 8 feet longer than the width. if the perimeter is 80 feet, find the length and width of the rectangle

perimeter = 2L + 2W

 L=8+w

perimeter = 2(8+w) +2w

80 =16+2w+2w

80 = 16 +4w

64 =4w

w=64/4 = 16

 l=16+8 =24

 length = 24 feet

width = 16 feet

 check 2(24) +2(16) = 48 + 32 = 80

y = x - 8

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = - 5x + 7 ← is in slope- intercept form

with slope m = - 5

Given a line with slope m then the slope of a line perpendicular to it is

= - = - =

The perpendicular line has y- intercept (0, - 8 ) ⇒ c = - 8

y = x - 8 ← equation of perpendicular line