Find the center of mass of a thin plate of constant density covering the given region.The region bounded by the x-axis and the semicircle y = 
A. 
= 0, 
= 
B. 
= 
, 
= 
C. 
= 0, 
= 
D. 
= 
, 
= 0
Answer: C
Mathematics
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Simplify.
A. - 
x16
B. - 
x10
C. - 
x16
D. 
x10
Mathematics
Use the table to answer the question.Let y be the value of a computer (in hundreds of dollars), when it is x years old. Some pairs of values are listed in the table below.
Find an equation that describes the relationship between x and y.
A. y = 0.25x - 8 B. y = -0.25x C. y = -0.25x - 8 D. y = -0.25x + 8
Mathematics
Find the domain of the given function.f(x) = 
A. [-3, 1) ? (1, 3] B. [-9, 1) ? (1, 9] C. (-?, -3) ? (3, ?) D. [-3, 3]
Mathematics
Perform the given operations. Let U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} (U represents the universal set).
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics