Determine whether the points A, B, and C form a right triangle.A = (7, 4); B = (15, 4); C = (15, 9)
A. Yes
B. No
Answer: A
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Find the derivative.r = 4 - ?4 cos ?
A. 
= - 4?3 cos ? + ?4 sin ?
B. 
= 4?3 sin ?
C. 
= 4?3 sin ? - ?4 cos ?
D. 
= 4?3 cos ? - ?4 sin ?
Evaluate the root.
A. 0.02 B. 0.2 C. { } D. 2
Find the volume of the solid generated by revolving the region about the y-axis.The region in the first quadrant bounded on the left by y = 
, on the right by the line 
, and above by the line y = 2
A. 54? B. 18? C. 36? D. 12?
Solve the problem.At the beginning of a trip, the odometer on a car reads 25,425 and the car has a full tank of gas. At the end of the trip the odometer reads 25,710 and there are 1.5 gallons remaining in the tank. The tank can hold a total of 12 gallons. What is the average rate of change of the number of miles with respect to the number of gallons? Assume that the tank was not filled during the trip.
A. 285 miles B. 21.11 miles/gal C. 27.14 miles/gal D. 23.75 miles/gal