Solve the problem.In the morning, May drove to an appointment at 50 mph. Her average speed on the return trip in the afternoon was 40 mph. The return trip took  hour longer. How far did she travel to the appointment?

A. 25 mi
B. 0.5 mi
C. 20 mi
D. 7.5 mi


Answer: A

Mathematics

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A. -  - 
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Make the required change in the given equation.z = cot ? to Cartesian coordinates

A. z = 
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C.  = 
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