Find the coordinates of the other endpoint of the segment, given its midpoint and one endpoint. (hint: let (x, y) be the unknown endpoint. apply the midpoint formula, and solve the two equations for x and y.) midpoint (-18,-12) endpoint (-9,-11)

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)