The best answer is C) Heidi has piano lessons every Friday at 6 p.m.
Answer:
Compound
Explanation:
I'm not entirely sure if this is right, so let me know if it is :)
Answer:
I have no answer but did u ever figure it out the answer
I think this is the Rising action

The harmonic frequency refers to the resonant frequency that is an integral multiple of the fundamental frequency, harmonics are usually simple sinusoidal oscillation at a single frequency. where as Resonance frequency are frequencies that are not necessarily sinosudal or integral multiple of fundamental frequency and it may have complex oscillations made up of multiple harmonics ~
It's like if you play a piano with a single key, it will show harmonic frequency, but if you use multiple keys at a time it may show Resonance.