Question

Under standard atmospheric conditions, water will not remain a liquid if its temperature is less than or equal to 0°C or if it is greater than or equal to 100°C. Suppose you have a cup of water that is room temperature, or 20°C.

a. Write a compound inequality to represent the number of degrees of Celsius c that the temperature of the cup must change to longer be liquid.

Answer 1

Answer: +80°C or -20°C

Explanation:

This is the answer because if you add 80 then it will equal 100°C and freeze and if 20°C is taken away it will equal 0°C and freeze.