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Thread: Fahrenheit and Celsius conversion

  1. September 11th 2009, 05:48 PM #1
    jsu03
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    Fahrenheit and Celsius conversion

    Hey, can someone help me with this problem, I have no idea what to do. Thanks!

    At what temperatures will the readings on the Fahrenheit and Celsius thermometers be the same?

    I set up a formula and solve for x but I got a wrong answer.
    Last edited by mr fantastic; September 11th 2009 at 06:29 PM. Reason: Changed post title
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  2. September 11th 2009, 06:28 PM #2
    mr fantastic
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    Quote Originally Posted by jsu03 View Post
    Hey, can someone help me with this problem, I have no idea what to do. Thanks!

    At what temperatures will the readings on the Fahrenheit and Celsius thermometers be the same?

    I set up a formula and solve for x but I got a wrong answer.
    C=\frac{5(F - 32)}{9}.

    Substitute C = F and solve for F.
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  3. September 11th 2009, 07:00 PM #3
    jsu03
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    Chemistry

    So...
    F= 1.8(C) +32
    F = (1.8(5(F-32)/9) + 32
    = 76
    I believed I did this wrong. Im still very confuse. Can u tell me what I did wrong.
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  4. September 11th 2009, 07:24 PM #4
    skeeter
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    Quote Originally Posted by jsu03 View Post
    So...
    F= 1.8(C) +32
    F = (1.8(5(F-32)/9) + 32
    = 76
    I believed I did this wrong. Im still very confuse. Can u tell me what I did wrong.
    F = 1.8F + 32

    subtract 1.8F from both sides ...

    -.8F = 32

    F = \frac{32}{-0.8} = -40
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