Use Direct and Inverse Variation · Example 7
The frequency of a guitar string varies inversely with its length. A 26” long string has a frequency of 440 vibrations per second.
ⓐ Write the equation of variation.
ⓑ How many vibrations per second will there be if the string’s length is reduced to 20” by putting a finger on a fret?
Its source prints no answer for this problem, so there's nothing to check against.
OpenStax, Elementary Algebra 2e · §8.9 Use Direct and Inverse Variation · Example 7
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