What is the equation of the parabola, in vertex form, with vertex at (2,-4) and
directrix y = -6?

An episode of a television show is 60 minutes long when it originally airs with commercials. on a dvd without commercials, the episode is only 417 minutes long. how many1-minute commercials did the episode include when it originally aired? write and solve an equation to justify your answer.

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Acircle has a radius of 12.6cm what is the exact length of an arc formed by a central angle measuring 120