Find an explicit formula for an.7, -7, 7, -7, 7, . . .
A. an = 7(-1)n
B. an = 7(-1)2n-1
C. an = 7(-1)n+1
D. an = 7(-1)2n+1
Answer: C
Mathematics
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A. 5040 B. 0 C. 7 D. 1
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Indicate whether the number is prime or composite.61
A. Composite B. Prime
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Find two square roots for the complex number. Write your answer in standard form.
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?
A. 
B. 
C. 
D. 
E. 
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