Solve the system by the elimination method or a combination of the elimination and substitution methods.x2 + y2 = 85x2 - y2 = 13
A. {(7, 6), (6, 7), (-7, -6), (-6, -7)}
B. {(7, -6), (7, 6)}
C. {(7, 6), (-7, 6), (7, -6), (-7, -6)}
D. {(-7, -6), (-6, -7)}
Answer: C
Mathematics
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A. 
B. 
C. 
D. 
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Let f(x) = 8x2 - 5x and g(x) = 7x + 9. Find the composite.f[g(-3)]
A. 7050 B. 408 C. 1212 D. 618
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Solve the equation.34 - 
= 
A. 
B. 
C. {2}
D. {144}
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Find the center-radius form for the circle having the given endpoints of a diameter.(-1, -7) and (1, 1)
A. (x - 0)2 + (y + 3)2 = 17 B. (x - 0)2 + (y + 3)2 = -5 C. (x + 0)2 + (y - 3)2 = -5 D. (x + 0)2 + (y - 3)2 = 17
Mathematics