Algebra

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The folrmula F=9/5c+32 can be used to make temperature conversions with the Celsius ans Fahrenheit temperature scales.

F-Fahrenheit temperature

C=Celsius temperature

Convert 100 degress Fahrenheit to the Celsius temperature scale.

Book says answer is 37.78 Celsius

I am not arriving at this answer.

  • Algebra -

    Substitute the 100 degrees F

    100=9/5C+32

    subtract 32 from each side

    100-32=9/5C

    68=9/5C

    68x5/9=C
    so
    C=37.8

    Is this OK. Can you see where you went wrong?

  • Algebra -

    Thank you for your response

    I am not sure where I went wrong. I will review the calculation your provided later.

    Your assistance is greatly apreciated.

  • Algebra -

    Using your equation F = (9/5) C + 32, which IS the correct equation,
    100 = (9/5) C + 32
    (9/5) C = 68
    C = (5/9)*68 = 37.78 (or 37 7/9)

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