The two endpoints of a segment are at $(1,4)$ and $(1,10)$. What is the sum of the coordinates of the midpoint of the segment?
The average of the x coordinates is 1. (1+1)/2
The average of the y coordinates is 7. (4+10)/2
The the coordinates of the midpoitn is (1, 7).
Hope this helped. :))
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+31 
