Convert the degree measure to radians. Leave the answer as a multiple of ?.-30°
A. - 
B. - 
C. - 
D. - 
Answer: C
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Find the center of mass of a thin plate covering the given region with the given density function.The region enclosed by the parabolas y = 72 - x2 and y = x2, with density ?(x) = x2
A. 
= 36, 
= 0
B. 
= 0, 
= 
C. 
= 0, 
= 36
D. 
= 0, 
= 72
Choose the model that matches the described situation.A 10 gallon tank of water is drained at a rate of 3 gallons per minute for 2 minutes, is left for 4 minutes, then is emptied at a rate of 4 gallons per minute.
A. 
B. 
C. 
D. 
Solve the equation.-10y - 10 = 7 - 6y
A. 
B. 
C. 
D. 
Solve the problem.Two cars leave an intersection. One car travels north; the other east. When the car traveling north had gone 6 mi, the distance between the cars was 2 mi more than the distance traveled by the car heading east. How far had the eastbound car traveled?
A. 10 mi B. 6 mi C. 12 mi D. 8 mi