The perimeter of a rectangle is 36 ft. The length is 2 less then 3 times the width. What is the Length? what is the Width?
perimeter is equal to 2 times the length plus 2 times the width P= 2L + 2 W L=3W-2 using the substitution in perimeter equation P = 2(3W-2)+2W=36 , WE SOLVE THIS EQUATION 6W-4 +2W=36 8W=36+4 8W=40 W=40/8=5 W=5 L=3*5-2=15-2=13 P=(2*5)+(2*13)=10+26=36