Solve by the method of your choice.x2 + y2 = 40 -13x + y2 = 82
A. {(-6, 2), (-6, -2), (6, 2), (6, -2)}
B. {(-6, 2)}
C. {(-6, 2), (-6, -2), (-7, 2), (-7, -2)}
D. {(-6, 2), (-6, -2)}
Answer: D
Mathematics
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Graph the polar equation.r = 
A. 
B. 
C. 
D. 
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Rationalize the denominator and simplify. 
A. 
B. 
C. 8
D. 
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Evaluate the expression, if possible.81-5/4
A. 243
B. 
C. - 
D. not a real number
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Work. In physics, the work W done by a constant force on a point that moves in a straight line varies directly as the point displacement s. If the work becomes 242 J for a displacement of 11 meters, what is the work for a displacement of 20 meters?
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Mathematics