Last q for the day... medal and fan for this one!!!!

Louis is planning to mow a rectangular yard that is 20 feet longer than it wide. He wants to find its width if its area is 1125 square feet. Which equation models this problem?

A.
20w2 = 1125

B.
w2 + 20w = 1125

C.
w2 – 20w = 1125

D.
w + 20w = 1125

Question

Last q for the day... medal and fan for this one!!!!




Louis is planning to mow a rectangular yard that is 20 feet longer than it wide. He wants to find its width if its area is 1125 square feet. Which equation models this problem?
 
 A.
20w2 = 1125
 
 B.
w2 + 20w = 1125
 
 C.
w2 – 20w = 1125
 
 D.
w + 20w = 1125

anonymous · Answer

1125 = L * w

"20 feet longer than it wide" is
L = 20+W

combine the two equations by replacing the L in the top eqaution with the L from the second equation

done

anonymous · Answer

A = l * w

l = w + 20 (20 feet longer than it is wide)
A = 1125

Plug in what you know, and you'll have your answer.