Perform the Row Operation(s) on the Given Augmented Matrix A) $\left[ \begin{array} { r r | r } - 4 & - 28 & - 40 \\ 0 & - 20 & - 44 \end{array} \right]$

question 162

Multiple Choice

Perform the row operation(s) on the given augmented matrix.
- $$\begin{array} { l } \mathrm { R } _ { 2 } = - 4 \mathrm { r } _ { 1 } \\{ \left[ \begin{array} { l l | l } 1 & 7 & 10 \\4 & 8 & - 4\end{array} \right] }\end{array}$$

• A) \(\left[ \begin{array} { r r | r } - 4 & - 28 & - 40 \\ 0 & - 20 & - 44 \end{array} \right]\)
• B) \(\left[ \begin{array} { r r | r } 1 & 3 & 10 \\ 0 & 10 & 18 \end{array} \right]\)
• C) \(\left[ \begin{array} { r r | r } - 4 & - 28 & - 40 \\ 4 & 8 & - 4 \end{array} \right]\)
• D) \(\left[ \begin{array} { r r | r } 1 & 7 & 10 \\ 0 & - 20 & - 44 \end{array} \right]\)

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