An airplane flying north at 200 passed over a point on the
Chapter 2, Problem 69(choose chapter or problem)
An airplane flying north at 200 passed over a point on the ground at 2:00 P.M. Another airplane at the same altitude passed over the point at 2:30 P.M., flying east at 400 (see the figure). (a) If t denotes the time in hours after 2:30 P.M., express the distance d between the airplanes in terms of t. (b) At what time after 2:30 P.M. were the airplanes 500 miles apart?
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