# 4.6 - Blackboard Learning System 9:48 PM Your location...

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3/29/09 9:48 PM Blackboard Learning System Page 1 of 5 http://online.sdccd.edu/webct/urw/lc4130001.tp0/cobaltMainFrame.dowebct View Attempt 1 of 5 Title: Problem Set 4.6 Started: March 22, 2009 2:41 AM Submitted: March 22, 2009 4:30 AM Time spent: 01:48:41 Total score: 6/10 = 60% Total score adjusted by 0.0 Maximum possible score: 10 Done 1. Provide an appropriate response. Assume x = x(t) and y = y(t). Find and = 2 when and Student Response Feedback A. B. - C. - D. Score: 0/1 2. Provide an appropriate response. Evaluate dy/dt for the function at the point. = x 2 + y 2 ; dx/dt = 12, x = 1, y = 0 Your location: Assessments View All Submissions › View Attempt

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3/29/09 9:48 PM Blackboard Learning System Page 2 of 5 http://online.sdccd.edu/webct/urw/lc4130001.tp0/cobaltMainFrame.dowebct Student Response Feedback A. B. - 12 C. 12 D. - Score: 1/1 3. Provide an appropriate response. Suppose two automobiles leave from the same point at the same time. If one travels north at 60 miles per hour and the other travels east at 45 miles per hour, how fast will the distance between them be changing after three hours?
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