Solve the problem.A bag of marbles has twice as many blue marbles as green marbles, and the bag has at least 15 marbles in it. At least how many green marbles does it have?
A. At least 8 green marbles
B. At least 10 green marbles
C. At least 6 green marbles
D. At least 5 green marbles
Answer: D
Mathematics
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A. 
B. 
C. 
? 
D. 
? 
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Find the missing angle.
A. 69° B. 77° C. 26° D. 87°
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Use an analytic method to solve the equation.x-1 - 72x-2 + 1 = 0
A. {-9, 8}
B. 
C. {8, 9}
D. {-8, 9}
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Perform the indicated operations.Divide 
.
A. 17.6 B. 0.56818182 C. 1.76 D. 0.05681818
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