Perform the indicated operation. 
÷ 
A. 
B. 
C. 
D. 
Answer: C
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Solve the problem.The shape and density of a thin shell are indicated below. Find the coordinates of the center of mass.Shell: portion of the sphere x2 + y2 + z2 = 16 that lies in the first octantDensity: constant
A. 
B. 
C. 
D. 
State the domain of the given function.f(x) = 
A. All real numbers x > 3
B. All real numbers except 3
C. All real numbers except 
D. All real numbers
Solve.A deep sea diving bell is being lowered at a constant rate. After 9 minutes, the bell is at a depth of 400 feet. After 55 minutes the bell is at a depth of 1300 feet. What is the average rate of lowering per minute?
A. 16.4 ft per minute B. 23.6 ft per minute C. 19.6 ft per minute D. 0.05 ft per minute
Simplify the expression.
A. cos3 ? B. tan2 ? C. sin ? D. sec2 ?