Given a set # {-1, x ,-4, -21} #, for what x would the mean of the set be 0?
1 Answer
Feb 24, 2016
Explanation:
It is assumed that by Mean we mean Arithmetic Mean. This is just a sum of all numbers divided by 'number' of numbers. As there are four numbers here,for mean to be
As sum of three known numbers is -26,
