4. Find the length of the median CM if the vertices of triangle CBA are C(-4,3), B(1,-3) and A(5,7).
A.5
B. 3
C.5V5
D. 2V3
5. The endpoints of a segment are (-5, 2) and (9, 12) respectively. What are the coordinates of its midpoint?
A. (7,5)
B. (2,7)
C. (-7,5)
D. (7,3)​