Find the first term and the common ratio of the geometric sequence., , , , , . . .

A. a1 = 4, r = 
B. a1 = 4, r = 6
C. a1 = , r = 4
D. a1 = , r = 

Answer: C

Mathematics

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Divide to find the exact answer. Express the answer as a whole or mixed number when possible and simplify.5 ÷ 8

A.  
B.  
C.
D.  

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Find the real or imaginary solutions by completing the square.x2 + 4x + 13 = 0

A. {2 ± 3i}
B. {-2 ± 3i}
C. {-2 ± }
D. {1, -5}

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Simplify and add or subtract wherever possible. + 6 + 4

A. -72 
B. 47
C. -47
D. -18

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Decide whether or not the equation defines y as a function of x. = x2 + 4 (Hint: Let x = 0.)

A. No B. Yes

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Mathematics