Answer
$\sqrt 170.69\approx13.065$ units
Work Step by Step
We know that the distance $d$ between two points $(x_{1},y_{1})$ and $x_{2},y_{2})$ is given by $d=\sqrt ((x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2})$.
Therefore, the distance between $(9.6,2.5)$ and $(-1.9,-3.7)$ will be $d=\sqrt ((-1.9-9.6)^{2}+(-3.7-2.5)^{2})=\sqrt ((-11.5)^{2}+(-6.2)^{2})=\sqrt (132.25+38.44)=\sqrt 170.69\approx13.065$ units