Hey there!
In order to convert a fraction into a decimal, you have to DIVIDE the NUMERATOR from the DENOMINATOR
Example FORMULA:
a / b
= a ÷ b
= decimal
Now that we have that out of the way we can answer the given question
9 / 30
= 9 ÷ 30
= 9 ÷ 3 / 30 ÷ 3
= 3 / 10
= 3 ÷ 10
= 0.30
Therefore, your answer is: 0.30
Good luck on your assignment and enjoy your day!
~Amphitrite1040:)