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dhudz23

  • 2 years ago

A rectangular flower garden with dimensions 3m by 7m is surrounded by the walk of uniform width. If the are of the walk is 11 sq. m, what is the width in meters?

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  1. zordoloom
    • 2 years ago
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    |dw:1358847023244:dw|

  2. zordoloom
    • 2 years ago
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    Do you know where to go from here?

  3. dhudz23
    • 2 years ago
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    Not really..

  4. zordoloom
    • 2 years ago
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    Do you mind if I continue?

  5. dhudz23
    • 2 years ago
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    Not at all.

  6. zordoloom
    • 2 years ago
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    |dw:1358847340760:dw|

  7. zordoloom
    • 2 years ago
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    Do you think you can solve that equation?

  8. dhudz23
    • 2 years ago
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    Not sure.. I could but it would take me a while and i wouldn't be to confident of my answer.

  9. zordoloom
    • 2 years ago
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    (7+2x)(3 +2x)-11=21---> 4x^2+20x-11=0----> now solve this using the quad. equation. x=-5.5 and x=.5 The value can only be positive therefore the width can only be x=.5 So the width around the garden is 1/2 m or .5m. Whichever method your prefer.

  10. zordoloom
    • 2 years ago
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    Does that help?

  11. dhudz23
    • 2 years ago
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    Yes it does, thank you!

  12. zordoloom
    • 2 years ago
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    You're welcome!

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