Solve the problem.If u = 
, v = 
, and w = 
, evaluate u ? (v - w).
A. -7
B. -3
C. 20
D. -12
Answer: A
Mathematics
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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 x = y2 and the line x = 1, with density ?(x) = y2
A. 
= 0, 
= 
B. 
= 
, 
= 0
C. 
= 
, 
= 0
D. 
= 
, 
= 0
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Convert to base ten.200six
A. 144 B. 120 C. 108 D. 72
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Solve the problem.A salesperson earned $275 a week plus a bonus of $21 for each service contract sold. What is the weekly pay if 5 service contracts were sold?
A. $380 B. $275 C. $480 D. $105
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Sketch the graph of the conic section given in polar form.r = 
A. 
B. 
C. 
D. 
Mathematics