a minor chord is composed of notes whose frequencies are in the ratio 10:12:15. if the first note of a minor chord has a frequency of 220 hertz, what are the frequencies of the other two notes?
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The record A:B:C = 10:12:15 means, by definition, that there is a quantity x such that A = 10x, B = 12x, C = 15x,
and this quantity "x" is called "a common measure".
So, in our case, that means that the common measure is 220 Hz = 10x; hence, x = = 22 Hz.
Then other two notes are 12*22 = 264 Hz and 15*22 = 330 Hz.
Math and Music have a common base: harmony.
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