Solve the equation by completing the square.x2 + x +  = 0

A. {- , - }
B. {- }
C. {, - }
D. {}


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 below by the parabola  and above by the line , with density 

A.  =  = 
B.  =  = 
C.  =  = 
D.  =  = 

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Determine if the given ordered triple is a solution of the system.3x + 3y + z = -145x - 4y - z = -83x + y + 4z = -7(-3, -2, 1)

A. No B. Yes

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Graph the equation.-7y - 7 = -6y

A.

B.

C.

D.

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The graph of a polar equation is given. Select the polar equation for the graph. 

A. r sin ? = 3 B. r = 3 C. r = 6 cos ? D. r = 6 sin ?

Mathematics