Find the angle
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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.

Is the square root of 4 plus the square root of 16 rational?

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12