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September 30, 2014

Homework Help: mathematics please help!

Posted by True on Sunday, July 22, 2012 at 6:33pm.

For what value of k does the system below not have a unique solution?
-1x + 7y + 2z = 6
2x + 1y + kz = -11
3x - 6y - 2z = -25

A.5
B.0
C.-2
D.-8

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