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Mathematics 12 Online
OpenStudy (anonymous):

One airplane is approaching an airport from the north at 124 km/hr. A second airplane approaches from the east at 223 km/hr. Find the rate at which the distance between the planes changes when the southbound plane is 34 km away from the airport and the westbound plane is 15 km from the airport.

OpenStudy (anonymous):

i keep getting -203.427. is this right?

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