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Math Help - Quadratic Equation Word Problem..

  1. #1
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    Ontario
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    Quadratic Equation Word Problem..

    hey guys (again )
    so i just wanna make sure i did the question right...
    i've attached a picture of the question and the diagram that shows the situation,
    and my half of my solution is on the picture as well;
    if you guys could let me know if i did the question right, and if not, what i did wrong that'd be awesome
    or you guys could just type the solution, & i'll check what i did wrong :P

    thanks guys i have a test tmrw, so i wanna get over 90 to boost my mark (i got a 77 on my last test, sooooo disappointed )

    Quadratic Equation Word Problem..-img.jpg
    Question:
    Lila is creating dog runs for her dog kennel. She can afford 30m of chain-link fence to surround four dog runs. The runs will be attached to a wall, as shown in the diagram. To achieve the maximum area, what dimensions should Lila use for each run and for the combined enclosure?

    THANKS AGAINN !
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  2. #2
    Senior Member
    Joined
    Dec 2010
    Posts
    470
    Can length be negative?
    l = -3?
    Check the step when you factored out -5.

    Make sure to answer the question asked:
    What are the dimensions for each run and for the entire enclosure?

    Other than that looks good. Ace that test
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  3. #3
    Newbie
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    Ontario
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    oooooooh !
    i see what i did.. haha thanks
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