Answer
A) (°C x $\frac{9}{5}$) + 32 = 145°F
°C=$\frac{5(145-32)}{9}$
°C= 62.7778
B) (°C x $\frac{9}{5}$) + 32 = °F
°F =(20.6°C x $\frac{9}{5}$) + 32
°F=37.08+32
°F=69.08
Work Step by Step
To answer this question you need to know the formula for converting from degrees Celsius to degrees Fahrenheit: (°C x 9/5 )+ 32 = °F
A)
(°C x $\frac{9}{5}$) + 32 = 145°F
°C=$\frac{5(145-32)}{9}$
°C= 62.7778
B)
(°C x $\frac{9}{5}$) + 32 = °F
°F =(20.6°C x $\frac{9}{5}$) + 32
°F=37.08+32
°F=69.08
(for a more detailed explanation look on Chapter 3 - Matter and Energy - 3.3 Temperature - pages 69 to 72).