Question

Which to temperatures have a sum of 0°C?

2°C and -2°C

2°C and 2°C

-2°C and -2°C

2°C and 0°C

Answer 1

2°C and -2°C

Explanation:

A number and its opposite sum to zero. (The "opposite" is the number with a minus sign instead of a plus sign, or vice versa.)