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4 October, 00:32

Temperatures on the Celsius and Fahrenheit scales are related by the function C = 5 (F - 32) / 9, where C is the temperature in degrees Celsius and F is the temperature in Fahrenheit. What temperature on the Celsius scale is equivalent to 77 degrees Fahrenheit?

A

15 degrees Celsius

B

20 degrees Celsius

C

25 degrees Celsius

D

30 degrees Celsius

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Answers (2)
  1. 4 October, 00:54
    0
    Option C) 25 degrees Celsius

    Step-by-step explanation:

    C = 5 (F - 32) / 9

    To find the equivalent scale in Fahrenheit, we substitute the value of F in the equation as 77.

    Therefore:

    C = 5 (F - 32) / 9

    C = 5 (77 - 32) / 9

    Simplify the brackets first, before opening it.

    C = 5 (45) / 9

    C = 5 * 5

    C = 25 Degree Celsius

    Option C is correct

    Maths is fun!
  2. 4 October, 01:01
    0
    Answer: C = 5. (77 - 32) / 9

    C = 5.45/9

    C = 225/9

    C = 25 graus.
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