salinasalejandr salinasalejandr
  • 27-04-2019
  • Mathematics
contestada

I got 140 as my answer before but it said it was incorrect.

I got 140 as my answer before but it said it was incorrect class=

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jdoe0001 jdoe0001
  • 27-04-2019

[tex]\bf \begin{bmatrix} 11&-8\\-1&12 \end{bmatrix}\implies \stackrel{Determinant}{(11\cdot 12)-(-1\cdot -8)}\implies 132-(8)\implies 124[/tex]

recall, minus * minus = plus.

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