The double integral gives the mass of a lamina R. Determine the density ?, the mass, and the center of mass.
A. k; 2k; 
B. k; 2k; 
C. 2k; 2k; 
D. k; 4k; 
Answer: B
Mathematics
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A. 
B. 
C. 
D. 
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. Write 1 × 106 in standard form.
A. 10,000,000 B. 1,000,000 C. 100,000 D. 10,000
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.
A. 
B. 
C. 
D. 
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