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23 January, 23:12

The formula

F = 1.8C + 32 gives the temperature

in degrees Fahrenheit (F) for a given

temperature in degrees Celsius (C). There is

one temperature for which the number of

degrees Fahrenheit is equal to the number

of degrees Celsius. Write an equation you

can solve to find that temperature and

then use it to find the temperature

+1
Answers (1)
  1. 23 January, 23:41
    0
    Yes, that's an interesting exercise.

    The Celsius temp is ' C '.

    The Fahrenheit temp is 1.8C + 32

    If they're the same number, then C = 1.8C + 32

    Subtract 1.8C from each side: - 0.8C = 32

    Multiply each side by - 1 : 0.8C = - 32

    Divide each side by 0.8 : C = - 32/0.8 = - 40.

    -40°F and - 40°C are the same temperature.
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