7/2 + 7/3 =
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On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.
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Mis the midpoint of rq if rm equals 2x + 5 and mq equals 4x - 9 what is the length of rq
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