Solve the problem.A ring contains 8 keys: 1 red, 1 blue, and 6 gold. If the keys are arranged at random on the ring, find the probability that the red is next to the blue.
A. .143
B. .25
C. .286
D. .047
Answer: C
Mathematics
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Solve the inequality, and graph the solution set.x2 + 6x ? -8
A. [-2, ?)
B. (-?, -4]
C. (-?, -4] ? [-2, ?)
D. [-4, -2]
Mathematics
Express the function as a trigonometric function of x.sin 3x
A. 3 sin x - 4 sin3x B. 4 sin x cos3x - 4 sin3x cos x C. cos3x - 3 sin2x cos x D. 1 - 8 sin2x cos2x
Mathematics
Simplify by writing the expression with positive exponents. Assume that all variables represent nonzero real numbers.
A. 
B. 
C. 
D. 
Mathematics
Complete the statement so that the indicated property is illustrated. Simplify the answer, if possible.-6r - 8r =
A. 8r - 6r = 2r B. -8r - 6r = -14r C. (-6 - 8)r = -14r D. (-6 + 8)r = 2r
Mathematics