Respuesta :
Answer:
.000039
Step-by-step explanation:
When dividing by a power of 10, we move the decimal to the left
There are 5 zero's , so move it to the left 5 places
Add zeros if necessary
3.9 becomes .000039
Step-by-step explanation:
[tex] \frac{3.9}{100000} = \frac{3.9}{ {10}^{5} } = \frac{39}{ {10}^{6} } = 0.000039[/tex]