Solve the system of equations (only real solutions) by the elimination method. Check your solutions.
A. {(2, 7), (7, 2), (-2, -7), (-7, -2)}
B. {(-2, -7), (-7, -2)}
C. {(2, -7), (2, 7)}
D. {(2, 7), (-2, 7), (2, -7), (-2, -7)}
Answer: D
Mathematics
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Determine if the series converges absolutely, converges, or diverges.
A. diverges B. converges absolutely C. converges conditionally
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Expand using the binomial theorem.(x - 9y)5
A. x5 - 45x4y + 810x3y2 - 7290x2y3 + 32,805xy4 - 59,049 B. x5 - 45x4y + 1620x3y2 - 14,580x2y3 + 32,805xy4 - 59,049y5 C. x5 - 45x4y + 1620x3y2 - 14,580x2y3 + 32,805xy4 - 9y5 D. x5 - 45x4y + 810x3y2 - 7290x2y3 + 32,805xy4 - 59,049y5
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Solve the inequality. Express your answer using interval notation.x + 7 < 9
A. (-?, 2]
B. (2, ?)
C. (-?, 16)
D. (-?, 2)
Mathematics
Determine whether the statement is true or false.6 > 9
A. True B. False
Mathematics