Find the fifth term and the nth term of the geometric sequence whose initial term, a, and common ratio, r, are given.a = 4; r = 
A. a5 = ; an = 4 ?
n
B. a5 = ; an = 4 ?
n-1
C. a5 = ; an = 4 ?
n
D. a5 = ; an = 4 ?
n-1
Answer: D
Mathematics
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A. x2 = -12y B. y2 = 3x C. x2 = 12y D. y2 = 12x
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Using a sum or difference identity, write the following as an expression involving functions of ?.tan
A. -tan ?
B.
C.
D. tan ?
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Solve using Cramer's rule.
A. (5, -2) B. (-5, -2) C. (-2, 5) D. (2, -5)
Mathematics