Add. Simplify, if possible.
+ 
+ 
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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The double integral gives the mass of a lamina R. Determine the density ?, the mass, and the center of mass.
A. k; 21k?; 
B. Density is proportional to distance from the origin; 21k?; 
C. k; 21k?; 
D. Density is proportional to distance from the origin; 21k?; 
Mathematics
Write the fraction in decimal notation.
A. 0.415 B. 0.455 C. 0.466 D. 0.446
Mathematics
Graph the inequality on a number line.x ? 6
A. 
B. 
C. 
D. 
Mathematics
Solve the equation by factoring.(x - 3)(x + 9) = 0
A. {3, -3, 9, -9} B. {3, 9} C. {3, -9} D. {-3, 9}
Mathematics