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algebraI

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Airplane at 19,200 feet descending at a rate of 40 feet per second. Another airplane takes off and ascends at a rate of 60 feet per second. After how many seconds will the airplanes be at the same height? What is this height?

  • algebraI - ,

    19,200 - 40s = 0 + 60s

    Solve for s, then 19,200-40s will be altitude.

  • algebraI - ,

    192

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