SOLUTION: The length of a rectangle is 5cm. More than twice the width. The area of the rectangle is 36 square cm. what is the length? A. 4 cm B. 9 cm C. 14 cm D. 26 cm

Algebra ->  Rectangles -> SOLUTION: The length of a rectangle is 5cm. More than twice the width. The area of the rectangle is 36 square cm. what is the length? A. 4 cm B. 9 cm C. 14 cm D. 26 cm      Log On


   

Question 880155: The length of a rectangle is 5cm. More than twice the width. The area of the rectangle is 36 square cm. what is the length?
A. 4 cm
B. 9 cm
C. 14 cm
D. 26 cm
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
w for width and L for length;
L=2w+5 and wL=36.

w%282w%2B5%29=36
2w%5E2%2B5w-36=0
Discrm, 25%2B8%2A36=313, prime number.
w=%28-5%2Bsqrt%28313%29%29%2F4

Continue this using L=2w+5....