What is the simplified form of x-4/x^2-x-12 • x-4/x^2-8x+16
A) 1/(x-4)^2
B)1/(x+3)(x-4)
C)1/(x+4)^2
D)1/(x-3)(x+4)

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Tiara buys the pizza shown below: a circular pizza is shown. the edge of one slice is marked ab. what does the curve ab represent?

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.