Solve the problem.The shape and density of a thin shell are indicated below. Find the moment of inertia about the z-axis.Shell: "nose" of the paraboloid x2 + y2 = 2z cut by the plane z = 1Density: ? = 
A. Iz = 
?
B. Iz = 
?
C. Iz = 16?
D. Iz = 2?
Answer: D
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Answer the question.Which of the following describes the bias that occurs when researchers select their sample in such a way that it is unlikely to be representative of the population?
A. Selection bias B. Availability bias C. Double-blind bias D. Participation bias
Choose the best estimate from the list.4
+ 11
is approximately 15, 15
, 15
, 16.
A. 16
B. 15
C. 15
D. 15
Solve the problem.An airplane is cruising at an altitude of 10,560 ft. What is the plane's altitude in miles?
A. 3 mi B. 2 mi C. 1 mi D. 4 mi
Solve the problem. Round to the nearest cent.Larry wants to start an IRA that will have $400,000 in it when he retires in 22 years. How much should he invest semiannually in his IRA to do this if the interest is 9% compounded semiannually?
A. $3032.28 B. $3019.28 C. $2889.93 D. $11,018.26