Find the foci of the given hyperbola.
- 
= 1
A. (0, -11), (0, 11)
B. (0, - 
) , (0, 
)
C. (-6, 0), (6, 0)
D. (- 
, 0) , (
, 0)
Answer: D
Mathematics
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A.
B.
C.
D.
E.
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Find the limit.
e-x2 - y2
A. 1 B. 0 C. e32 D. e-32
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For the given polar equation, write an equivalent rectangular equation.r = 
A. 9x - 7y = 1
B. 
= 1
C. 
+ 
= 1
D. 9y - 7x = 1
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Find the center (h, k) and the radius r of the circle.x2 + y2 + 2x - 8y - 8 = 0
A. (h, k) = (4, -1), r = 5 B. (h, k) = (1, -4), r = 25 C. (h, k) = (-1, 4), r = 5 D. (h, k) = (-4, 1), r = 25
Mathematics