​Find the Determinant of the Matrix $$\left[ \begin{array} { c } - \frac { 1 } { 6 } - \frac { 1 } { 6 } \\\\- 1 - \frac { 2 } { 5 }\end{array} \right]$$

question 7

Multiple Choice

​Find the determinant of the matrix $$\left[ \begin{array} { c } - \frac { 1 } { 6 } - \frac { 1 } { 6 } \\\\- 1 - \frac { 2 } { 5 }\end{array} \right]$$ . ​

• A)​ \(- \frac { 1 } { 8 }\)
• B)​ \(\frac { 7 } { 30 }\)
• C)​ \(- \frac { 1 } { 10 }\)
• D)​ \(- \frac { 1 } { 12 }\)
• E)​ \(\frac { 7 } { 30 }\)

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