Solve the System of Linear Equations $\left\{ \begin{array} { l l } - 8 x + 24 y + 8 z & = 3 \\16 x + 40 y & = 6 \\24 x + 8 y - 16 z & = - 3\end{array} \right.$

question 1

Multiple Choice

Solve the system of linear equations $\left\{ \begin{array} { l l } - 8 x + 24 y + 8 z & = 3 \\16 x + 40 y & = 6 \\24 x + 8 y - 16 z & = - 3\end{array} \right.$ using an inverse matrix.

• A) \(\left[ \begin{array} { c }
• x \\
• y \\
• z
• \end{array} \right] = \left[ \begin{array} { c }
• - \frac { 3 } { 8 } \\
• 0 \\
• \frac { 9 } { 8 }
• \end{array} \right]\)
• B) \(\left[ \begin{array} { c }
• x \\
• y \\
• z
• \end{array} \right] = \left[ \begin{array} { c }
• 0 \\
• \frac { 3 } { 4 } \\
• ~- \frac { 3 } { 8 }
• \end{array} \right]\)
• C) \(\left[ \begin{array} { l }
• x \\
• y \\
• z
• \end{array} \right] = \left[ \begin{array} { c }
• \frac { 3 } { 8 } \\\\
• - \frac { 9 } { 8 } \\\\
• \frac { 3 } { 4 }
• \end{array} \right]\)
• D) \(\left[ \begin{array} { l }
• x \\
• y \\
• z
• \end{array} \right] = \left[ \begin{array} { l }
• \frac { 3 } { 8 } \\
• 0 \\
• \frac { 3 } { 4 }
• \end{array} \right]\)
• E) \(\left[ \begin{array} { l }
• x \\
• y \\
• z
• \end{array} \right] = \left[ \begin{array} { r }
• - \frac { 3 } { 8 } \\\\
• - \frac { 9 } { 8 } \\\\
• - \frac { 3 } { 4 }
• \end{array} \right]\)

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Schedule of Cost

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