We have the coordinates for each point. The formula for the midpoint is
[tex]xm\text{ = }\frac{x1\text{ + x2}}{2}\text{ and ym = }\frac{y1\text{ + y2}}{2}[/tex]For A, we have x1 = 98, and y1 = 42.
For B, we have x2 = 18, and y2 = 21.
Using the equation for midpoint:
[tex]xm\text{ = }\frac{98+18}{2}=\frac{116}{2}=\text{ 58}[/tex]And
[tex]ym\text{ = }\frac{42+21}{2}=\text{ }\frac{63}{2}=\text{ 31}.5[/tex]Therefore, the midpoint C is located in coordinates (xm, my) = (58, 31.5)
