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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Perform the indicated operation.(5r4 + 2r2 - 3r ) - (-9r3 + 5r2 - 3r - 9)
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Use long division to divide.
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?
?
A.
B.
C.
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E.
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Solve the problem.If v = -2i - 4j + k and u = 2i - 5j + 5k, find a vector perpendicular to both v and u.
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