Alissa G.

asked • 12/17/16

Matrix Evaluation

Evaluate | 12   -11|
             |  9    -7  | = -5x for x
 
 

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Kenneth S. answered • 12/17/16

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The left side of your equation is a single number, namely the value of a 2 by 2 determinant.
Compute that value, then solve 
   value = -5x  for x.
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Alissa G.

When you compute the values would the answer be 15?
 
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12/18/16

Kenneth S.

15 is the correct value of the determinant in your equation.
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12/18/16

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