Respuesta :

[tex]\begin{gathered} \frac{-3}{10}=-0.3 \\ \text{and} \\ 2\frac{1}{2}=2.5 \end{gathered}[/tex]

Then, the ordered list from greatest to least is:

[tex]2.7,2\frac{1}{2},-\frac{3}{10},-1.9[/tex]