Multiply. Simplify if possible.4
? 1
A. 4
B. 4
C. 5
D. 8
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 bounded by the curves y = ± 
and the lines x = 1 and x = 9, with density ?(x) = 
A. 
= 5, 
= 0
B. 
= 4, 
= 0
C. 
= 2, 
= 0
D. 
= 3, 
= 0
Solve the problem.A laminated lab bench has 1
inches of plywood, 2
inches of pressed board, and 
inches of formica. What is the thickness of the lab bench?
A. 1
in.
B. 
in.
C. 5
in.
D. 
in.
Solve the problem.Numbered disks are placed in a box and one disk is selected at random. If there are 6 red disks numbered 1 through 6, and 4 yellow disks numbered 7 through 10, find the probability of selecting a yellow disk, given that the number selected is less than or equal to 3 or greater than or equal to 8.
A. 
B. 
C. 
D. 
Find the exact value of the expression.
A. 
B. 
C. 
D. 2