Restate the question: What is the temperature change if it goes from 15C to -5C?
Answer: -20 Celsius degrees
If the temperature goes from 15C to -5C it has gone down 20 degrees.
You could also say: change = ending value - starting value
= -5 - (+15)
= -5 - 15
= -20.
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To find the temperature change from 12 degrees Celsius to -5 degrees Celsius, you would subtract the initial temperature from the final temperature. In this case, -5 minus 12 equals -17 degrees Celsius. Therefore, the temperature change is a decrease of 17 degrees Celsius.
15 degrees C
-15 degrees Celsius = 5 degrees Fahrenheit
(-5) degrees Celsius = 23 degrees Fahrenheit.
It's easy to convert from Celsius to Fahrenheit by yourself. Tf = (9/5)*Tc+32, where Tc = temperature in degrees Celsius, Tf = temperature in degrees Fahrenheit.15 C is 59 F.