We are given the endpoints of a line PQ
[tex]-0.5\text{ and }0.72[/tex]We are asked to find the midpoint of line PQ.
Let us first find the distance of line PQ
[tex]\begin{gathered} d=|x_2-x_1| \\ d=|0.72_{}-(-0.5)_{}| \\ d=|0.72_{}+0.5| \\ d=|1.22| \\ d=1.22 \end{gathered}[/tex]Recall that the midpoint is at the halfway of the line PQ so divide the distance by 2
[tex]midpoint=\frac{1.22}{2}=0.61[/tex]