Respuesta :

To write the number as tenths in fraction form it has to be divided by 10:

[tex]\frac{40}{100}=\frac{4\cdot10}{10\cdot10}=\frac{4}{10}[/tex]

Now, for the decimal form we compute the division

[tex]\frac{40}{100}=\frac{4}{10}=0.4[/tex]