A north-south highway intersects an eastwest highway at a
Chapter 0, Problem 79(choose chapter or problem)
A north-south highway intersects an eastwest highway at a point P. An automobile crosses P at 10 A.M., traveling east at a constant rate of . At the same instant another automobile is 2 miles north of P, traveling south at . (a) Find a formula for the distance d between the automobiles t hours after 10:00 A.M. (b) At approximately what time will the automobiles be 104 miles apart?
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