Find the infinite sum accurate to three decimal places.

A. 0.010
B. -0.007
C. -0.010
D. 0.007

Answer: B

Mathematics

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Find the area of the region specified in polar coordinates.the region enclosed by the curve r = 9 - 3 cos ?

A. ?
B. 45?
C. ?
D. 90?

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Mathematics

Solve the system of equations.-0.2x + 0.3y - 0.2z = 1.6-0.4x - 0.3y + 0.2z = 0.80.2x - 0.4y + 0.3z = -1.9

A. (0.6, 4, 0) B. (0.8, 2, 0) C. (0.6, 2, -1) D. (-4, 2, -1)

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Mathematics

Solve the equation.x2 + 7x - 18 = 0

A. x = -9, 1 B. x = -9, 2 C. x = 9, -2 D. x = 9, 2

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Mathematics

Find the foci and asymptotes of the hyperbola. -  = 1

A. (-4, 0), (4, 0); y = x, y = - x
B. (0, -5), (0, 5); y = x, y = - x
C. (-5, 0), (5, 0); y = x, y = - x
D. (0, -4), (0, 4); y = x, y = - x

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Mathematics