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Math Help - Related Rates (two triangles problem)

  1. #1
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    Related Rates (two triangles problem)

    I can't figure this one out!

    "at noon, ship A is 100 km west of ship B. ship A is sailing south at 35 km/hr, and ship B is sailing north at 25 km/hr. how fast is the distance between the two ships changing at 4:00 pm?"

    I have a picture drawn with the path of ship A called x and the path of ship B called y, with a line connecting the ends of the two labeled k, but i cannot think of how to relate these variables! please help!
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  2. #2
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    Re: Related Rates (two triangles problem)



    Maybe this picture will help to find k as a function of x and y and, ultimately, time.
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  3. #3
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    Re: Related Rates (two triangles problem)

    That helps a lot! Thank you!!
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