Answer:
sides are 7 in and 17 in
Explanation:
the perimeter (P) of a rectangle is calculated as
P = 2 ( sum of sides )
let s be the measure of 1 side then the other side is 3s - 4 , that is 4 in shorter than three times the other side s.
given P = 48 , then
2(s + 3s - 4) = 48
2(4s - 4) = 48 ( divide both sides by 2 )
4s - 4 = 24 ( add 4 to both sides )
4s = 28 ( divide both sides by 4 )
s = 7
3s - 4 = 3(7) - 4 = 21 - 4 = 17
the sides of the rectangle have measure 7 in and 17 in