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WhiteRabbit

  • 3 years ago

If the perimeter of the square at the right is 72 units, what are the values of x and y? (Will attach picture.)

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  1. WhiteRabbit
    • 3 years ago
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    |dw:1350348560300:dw|

  2. WhiteRabbit
    • 3 years ago
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    i did 3y + 2x = 36 and 4x + 6y = 72 to try to do eliminationt but.... that doesn't make any sense...

  3. tjones89
    • 3 years ago
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    what do you know about the sides of a square?

  4. WhiteRabbit
    • 3 years ago
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    they equal 72

  5. tjones89
    • 3 years ago
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    but how do the sides of a square relate to each other?

  6. tjones89
    • 3 years ago
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    and i mean any square not just this one

  7. WhiteRabbit
    • 3 years ago
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    oops i few the picture wrong.... it's supposed to be 3y not 3x...

  8. tjones89
    • 3 years ago
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    yea I figured from the equations that was supposed to be a y

  9. WhiteRabbit
    • 3 years ago
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    the sides of the square equal each other?

  10. tjones89
    • 3 years ago
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    yes

  11. tjones89
    • 3 years ago
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    so if you relate that to the square in your problem you can safely say that 2x = 3y

  12. WhiteRabbit
    • 3 years ago
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    so 2x = 3y and 8x= 72?

  13. tjones89
    • 3 years ago
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    yes

  14. WhiteRabbit
    • 3 years ago
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    and x = 9 so 2x is 18 and 3y is 27?

  15. tjones89
    • 3 years ago
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    3y = 2x so 3y should equal 2 * 9

  16. WhiteRabbit
    • 3 years ago
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    hmm but.... myeh so y = 6?

  17. tjones89
    • 3 years ago
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    yes good work

  18. WhiteRabbit
    • 3 years ago
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    hehe thanks

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