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Mathematics 10 Online
OpenStudy (sophadof):

Each key on a piano produces a frequency that is 2^1/12 times higher than the frequency of the key immediately to its left. Moving "n" keys to the right of any key increases the frquency of the starting note by a factor 2^n/12. The key corresponding to Concert A has a frequency of 440 Hz. What is the frequency of note D, which is 5 keys to the right of Concert A?

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