State the domain of the rational function.f(x) = 

A. (-?, 4) ? (4, ?)
B. (-?, ?)
C. (-?, -36) ? (-36, ?)
D. (-?, -4) ? (-4, ?)


Answer: D

Mathematics

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Evaluate.

A. 2!
B.
C. 42
D.

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Solve the given system of equations algebraically.y = x2 - 5y2 = 9

A. x = 2.828, y = 0; x = 3.742, y = 3 B. x = 2.828, y = 3; x = -2.828, y = 3; x = 1.414, y = -3; x = -1.414, y = -3 C. x = -5, y = -9; x = -5, y = 9; x = 5, y = 9; x = 5, y = -9 D. No solution

Mathematics

Solve the given trigonometric equation by use of a graphing calculator. Use values of x for 0 ? x < 2?.sin x + sin 3x = -cos x

A. 1.57, 1.83, 2.88, 4.71, 6.02 B. 0.26, 1.31, 1.57, 3.40, 4.45, 4.71 C. 1.57, 1.83, 2.88, 4.71, 4.97, 6.02 D. 2.18, 5.32

Mathematics

Decide whether or not the given equation is an identity.csc  = 2 cos  csc ?

A. Yes B. No

Mathematics