SOLUTION: A rectangular garden is 20 ft longer than it is wide. Its area is 2925 . What are its dimensions?

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Question 240471: A rectangular garden is 20 ft longer than it is wide. Its area is 2925 . What are its dimensions?
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Let represent the width. Then represents the length. Since the area of a rectangle is the length times the width:



Put the quadratic in standard form:



Now all you need to do is solve the quadratic and take the positive root as the width and add 20 to get the length. Hint: It factors.

-45 times 65 = -2925


John