Answer:
midpoint coordinates are (8.5, 10)
Explanation:
Let O be the midpoint of the segment MN
Let (xM, yM) be the coordinates of M and
let (xN, yN) be the coordinates of N
Then the x-coordinate of O, xO = (xM + xN)/2 = (10 + 7)/2 = 8.5
y-coordinate of O = (yM + yN)/2 = (8 + 12)/2 = 10
So the midpoint coordinates are (8.5, 10)