Find the vertices and foci of the ellipse. +  = 1

A. Vertices: (0, ±25); Foci: (0, ±20)
B. Vertices: (±25, 0); Foci: (±15, 0)
C. Vertices: (0, ±25); Foci: (0, ±15)
D. Vertices: (±25, 0); Foci: (±20, 0)


Answer: D

Mathematics

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A. 0.237 e400j B. 400 e13.6j C. 400 e0.237j D. 0.237 e13.6j

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Solve the following systems of linear equations using Gaussian elimination.

x + 2y + 2z = 7 6x + 11y + 9z = 35 x + y - 2z = -3

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Tell whether the relation is a function. 

A. Function B. Not a function

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Evaluate the expression. ? ?

A.
B.
C.
D.
E.

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