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October 1, 2014

October 1, 2014

Posted by **cindy** on Sunday, July 10, 2011 at 10:16pm.

An airplane passes over an airport at noon traveling 500 mi/hr due

West. At 1:00 pm, another airplane passes over the same airport at the same

elevation traveling due North at 550 mi/hr. Assuming both planes maintain their

(equal) elevations, how fast is the distance between them changing at 2:30 pm?

- calculus 1 -
**bobpursley**, Sunday, July 10, 2011 at 10:31pmdraw the figure, and start with the pythoragus theorem.

- calculus 1 -
**cindy**, Sunday, July 10, 2011 at 11:03pmOk so I figured the equation out but after I took the derivative I wasn't sure what to plug in where

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