Find a formula for the nth term of the sequence.0, 2, 0, 2, 0 (alternating 0's and 2's)
A. an = 1 - (-1)n
B. an = 1 + (-1)n-1
C. an = 1 + (-1)n+1
D. an = 1 + (-1)n
Answer: D
Mathematics
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A. r = sin 4? B. r = 4 sin ? C. r = 4 cos ? D. r = cos 4?
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Factor by grouping.x3 + 7x2 - 6x - 42
A. (x2 + 7)(x - 6) B. (x3 - 6x)(x + 7) C. (x2 - 6)(x - 7) D. (x2 - 6)(x + 7)
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Ohm's Law for the current I in a circuit with voltage E, resistance R, capacitance reactance XC, and inductive reactance XLis Use this law to solve the problem.Find I if
R = 9, XL= 7, and XC= 3.
A.
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B.
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C.
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D.
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Mathematics