What is the mean of #-5+(-15)#?

1 Answer
Oct 20, 2017

The mean is #-10#.

Explanation:

The mean is the average. The average is determined by totaling the addends, and then dividing the total by the number of addends.

#-5+(-15)#

Simplify.

#-5-15=-20#

There are two addends, #-5 and -15#. So divide #-20# by #2#.

#-20-:2=-20/2=-10#