#### Answer

$$9.2$$

#### 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 $x_{1}=-2$, $y_{1}=9$, $x_{2}=0$ and $y_{2}=0$ and round to the nearest tenth.
$$d=\sqrt {(0-(-2))^{2}+(0-9)^{2}}=\sqrt {4+81}=\sqrt{85}=9.2$$