To solve the equation \( 72 \div __ = 9 \), you can multiply both sides by the missing number. Rearranging gives you:
\( 72 = 9 \times __\)
So, to find the missing number, you can divide 72 by 9:
\( 72 \div 9 = 8 \)
The correct answer from the options provided is:
8 x 9 = 72
This means that you can use 8 to solve the equation \( 72 \div 8 = 9 \).
The other options do not pertain to solving the equation correctly.