SOLUTION: Find the dimensions of a rectangle with a perimeter of 90 cm if the length is 5 cm less than four times the width.

SOLUTION: Find the dimensions of a rectangle with a perimeter of 90 cm if the length is 5 cm less than four times the width.

Algebra.Com

Question 280887: Find the dimensions of a rectangle with a perimeter of 90 cm if the length is 5 cm less than four times the width.
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
L=4W-5
2L+2W=90
2(4W-5)+2W=90
8W-10+2W=90
10W=90+10
10W=100
WE=100/10
W=10 ANS. FOR THE WIDTH.
L=4*10-5=40-5=35 ANS. FOR THE LENGTH.
PROOF:
2*35+2*10=90
70+20=90
90=90
RELATED QUESTIONS
Find the dimensions of a rectangle with a perimeter of 90 cm if the length is 5 cm less... (answered by unlockmath)

Find the dimensions of a rectangle with a perimeter of 112 cm if the length is 4 cm less... (answered by PRMath)

Find the dimensions of a rectangle with a perimeter of 34 cm if the length is 4 cm less... (answered by checkley77)

Find the dimensions of a rectangle with a perimeter of 42 cm if the length is 7 cm less... (answered by solver91311)

The length of a rectangle is 5 cm less than three times its width. If the perimeter is 70 (answered by Maths68)

The perimeter of a rectangle is 90 cm. The length is 15 cm more than four times the... (answered by algebrahouse.com)

The length of rectangle is 3 cm less than four times its width. If the perimeter is 34... (answered by solver91311)

The perimeter of a rectangle is 74 cm. The length of the rectangle is 5 cm less than... (answered by gwendolyn)

The length of a rectangle is 2 cm more than four times the width. If the perimeter of the (answered by user_dude2008)