Simplify and reduce to lowest terms.
+ 
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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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. 
= 
, 
= 
B. 
= 0, 
= 
C. 
= 0, 
= 
D. 
= 
, 
= 0
Mathematics
Write the set in set-builder notation.The odd natural numbers less than 43
A. {x?x ? N < 42} B. {x?x ? N ? 43 and x is odd} C. {x?x ? N < 43} D. {x?x ? N ? 41 and x is odd}
Mathematics
Divide and simplify.
÷ 
A. - 
B. - 
C. - 
D. - 
Mathematics
Evaluate the determinant.
A. 54 B. 44 C. -54 D. -34
Mathematics