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3. One train is 15 miles east of Denver and is traveling west at 110 mph, while a second train is 20 miles north of

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3. One train is 15 miles east of Denver and is traveling west at 110 mph, while a second train is 20 miles north of Denver and is traveling north at 90 mph. Calculate the rate at which the distance between the trains is changing. Give units. Are the trains moving closer to one another or farther apart? (3 points)

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