Find the foci of the given hyperbola.
- 
= 1
A. (-3, -10), (-3, 0)
B. (-10, -3), (0, -3)
C. (-8, -3), (-2, -3)
D. (-3, -8), (-3, -2)
Answer: B
Mathematics
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Evaluate the radical function at the indicated value.f(x) = -
f(21)
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Find an equation of variation for the given situation.y varies jointly as x and the square of z, and y = 500 when x = 4 and z = 5
A. y = 25xz
B. y = 5xz2
C. y = 
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Mathematics