which situation describes opposite quantities then one combined would equal zero

Answer 1

In mathematics, this situation can be described by the concept of additive inverse or opposite numbers. The opposite of any number 'x' is denoted by '-x'.

For example, if we have the numbers 5 and -5, then when these opposite quantities are combined, they equal zero: 5 + (-5) = 0.

Another example is the numbers 3 and -3: 3 + (-3) = 0.