Answer:
[tex]z = \dfrac{3}{100}[/tex]
Step-by-step explanation:
We will isolate the variable z and then write it as a fraction.
Given:
0.3z = 0.009
Divide both sides of the equation 0.3:
z = 0.03
This is three-hundredths, so we can rewrite it as a fraction:
[tex]z = \dfrac{3}{100}[/tex]