Question

Four integers j, j, k, and n have an average of 0. Which of the following equations MUST be true?

k=n

k=-j

k+n=-2j

k+n=0

k+n=j

Answer 1

3rd

Answer 2

k+n=-2j? can u please give an explanation of how u got that?

Answer 3

this situation is only possible if J + j + k + n = 0

if i simplify that i have

2j + k + n = 0

if i subtract both sides by 2j

k + n = -2j

does that help?

Answer 4

yes