Find the standard-form equation of the hyperbola centered at the origin which satisfies the given conditions.Vertices at (3, 0) and (-3, 0); foci at (7, 0) and (-7, 0)

A.  -  = 1
B.  -  = 1
C.  -  = 1
D.  -  = 1


Answer: C

Mathematics

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Find the general form of the equation of the the circle.Center at the point (-6, -4); tangent to y-axis

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Mathematics