#### Answer

$$9.0$$

#### Work Step by Step

The distance $d$ between the two points $(x_{1},y_{1})$ and $(x_{2},y_{2})$ is given by
$$d=\sqrt {(x_{2}-x_{1})^{2} + (y_{2}-y_{1})^{2}}.$$
Substitute $x_{1}=-5$, $y_{1}=3$, $x_{2}=4$ and $y_{2}=3$ and round to the nearest tenth.
$$d=\sqrt {(4-(-5))^{2}+(3-3)^{2}}=\sqrt {81+0}=\sqrt{81}=9.0$$