The expression that can be used to convert 50°F to degrees Celsius is C) 5/9(50) - 32.
To convert temperature from Fahrenheit to Celsius, we use the formula C = 5/9(F - 32).
In this case, we need to substitute 50 for F in the formula.
By substituting 50 for F in the formula, we have:
C = 5/9(50 - 32)
Simplifying the expression inside the parentheses:
C = 5/9(18)
Multiplying 5/9 by 18:
C = 90/9
Simplifying the fraction:
C = 10
Therefore, the Celsius equivalent of 50°F is 10°C.