Solve the problem.Find the moment of inertia about the z-axis of a thick-walled right circular cylinder bounded on the inside by the cylinder r = 1, on the outside by the cylinder r = 4, and on the top and bottom by the planes z = 6 and z = 10.
A. 255?
B. 510?
C. 1020?
D. 512?
Answer: B
Mathematics
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Find the length and direction (when defined) of u × v.u = 5i, v = 3j
A. 5; 3k B. 15; 15k C. 15; k D. 15; -k
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Determine if the given regular figures form a vertex figure.Square, two octagons
A. Yes B. No
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Simplify the expression. If any variables exist, assume that they are positive.2
- 
A. (2x -1)
B. 2x
- 1
C. (x -1)
D. 2(x -1)
Mathematics
Simplify each complex fraction.
?
?
Assume that no denominators are 0.
?
A. ?
B. 
C. ?
D. ?
Mathematics