Mathematics, 08.10.2019 10:20, juliaduenkelsbu

An air traffic controller spots two airplanes at the same altitude converging to a point as they fly at right angles to each other. one airplane is 70 miles from the point and has a speed of 140 miles per hour. the other is 240 miles from the point and has a speed of 480 miles per hour.
(a) at what rate is the distance between the planes changing?
(b) how much time does the controller have to get one of the airplanes on a different flight path?

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An air traffic controller spots two airplanes at the same altitude converging to a point as they fly...