Ms. Sue, Can you help me with my homework?
Yes, of course. What is your homework about?
It's About Frequency.
Sure, I can help you with that. What do you need to know or what questions do you have?
Add: 9Hz + 7hZ =
To add frequencies, you simply add the numerical values. So adding 9Hz and 7Hz, we get:
9Hz + 7Hz = 16Hz
Therefore, the sum of 9Hz and 7Hz is 16Hz.