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OpenStudy (anonymous):
Choose the value of the x determinant (Dx) in the following system. 3x – 4y = –7 x + y = 7
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OpenStudy (anonymous):
so do I multiply it?
OpenStudy (anonymous):
A. 21 B. 28 C. –14 D. –35
OpenStudy (anonymous):
So the answer is 28?
OpenStudy (experimentx):
http://www.wolframalpha.com/input/?i=3x+%E2%80%93+4y+%3D+%E2%80%937%3B+x+%2B+y+%3D+7
OpenStudy (anonymous):
okay, thanks!!!
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OpenStudy (experimentx):
what's x determinant (Dx) ??
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