February 21, 2017

Homework Help: algebraI

Posted by kay on Tuesday, January 21, 2014 at 10:47am.

Airplane at 19,200 feet descending at a rate of 40 feet per second. Another airplane takes off and ascends at a rate of 60 feet per second. After how many seconds will the airplanes be at the same height? What is this height?

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