If lines l, m, and n are concurrent, then:
A. they intersect at one point
B. they are parallel
C. they do not determine a plane
D. None of These
Answer: A
Mathematics
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A. [-2, ?) B. (-?, 3] C. [3, ?) D. (-?, -2]
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Perform the indicated operation.(5r4 + 2r2 - 3r ) - (-9r3 + 5r2 - 3r - 9)
A. 6r4 + 10r3 + 7r2 + 9 B. 14r7 + 7r3 C. 5r4 - 9r3 + 7r2 - 9 D. 5r4 + 9r3 - 3r2 + 9
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Use long division to divide.
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A. 
B. 
C. 
D. 
E. 
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