Find the foci of the given hyperbola.x2 - y2 = 98
A. (14, 0), (-14, 0)
B. (7, 0), (-7, 0)
C. (0, 14), (0, -14)
D. (
, 0), (-
, 0)
Answer: A
Mathematics
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Solve the problem.The formula A = 221e0.031t models the population of a particular city, in thousands, t years after 1998. When will the population of the city reach 321 thousand?
A. 2012 B. 2010 C. 2013 D. 2011
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Factor.x2 + 3x - 10
A. (x + 5)(x + 2) B. (x - 5)(x + 2) C. (x + 5)(x - 2) D. (x - 5)(x - 2)
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Solve the system by the substitution method.
A. (9, 10), (10, 9) B. (-9, -10), (10, 9) C. (-9, 10), (-10, 9) D. (9, -10), (10, -9)
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Convert the angle from degrees to radians. Express the answer as a multiple of ?.-810°
A. -9?
B. - 
C. - 
D. 
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