SOLUTION: 8) If the value of 6 2 7 4 1 0 2 3 5 = -60, then evaluate 6 4 7 4 2 0 2 6 5

Algebra ->  Matrices-and-determiminant -> SOLUTION: 8) If the value of 6 2 7 4 1 0 2 3 5 = -60, then evaluate 6 4 7 4 2 0 2 6 5      Log On


   

Question 883888: 8) If the value of
6 2 7
4 1 0
2 3 5
= -60, then evaluate
6 4 7
4 2 0
2 6 5
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
evaluate
6 4 7
4 2 0
2 6 5
=====
= 6*(10) - 4*(20) + 7*(24-4) = 60 - 80 + 140
= 120 (if you mean the determinant)
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I don't know if the 1st one is 60. Might be, might not.
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All the elements in the middle column are doubled, so the 1st one is 60.