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OpenStudy (anonymous):
At noon, ship A is 40 nautical miles due west of ship B. Ship A is sailing west at 22 knots and ship B is sailing north at 20 knots. How fast is the distance between the ships changing at 3 PM? (Note: 1knot is a speed of 1 nautical mile per hour.) Rate of change of distance = ___ knots
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OpenStudy (anonymous):
That is not correct.
OpenStudy (anonymous):
It is 3 hours later.
OpenStudy (anonymous):
I've got 2ldl/dt=2ada/dt+2bdb/dt.
OpenStudy (anonymous):
Still incorrect...
OpenStudy (anonymous):
Oh! It's 28.99! Thanks though... Sometimes just posting and someone listening helps.
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