Consider the Augmented Matrix $\left[ \begin{array} { l l : l } 1 & - 1 & 2 \\8 & - 6 & 4\end{array} \right]$

question 249

Multiple Choice

Consider the augmented matrix $\left[ \begin{array} { l l : l } 1 & - 1 & 2 \\8 & - 6 & 4\end{array} \right]$ . Which of the following matrices shows the elementary row operation $- 8 R _ { 1 } + R _ { 2 }$ ?

• A) \(\left[ \begin{array} { c c : c }
• 1 & - 1 & 2 \\
• 0 & - 14 & - 12
• \end{array} \right]\)
• B) \(\left[ \begin{array} { l l : l }
• 1 & - 1 & 2 \\
• 0 & - 2 & 20
• \end{array} \right]\)
• C) \(\left[ \begin{array} { c c : c }
• 1 & - 1 & 2 \\
• 0 & 2 & - 12
• \end{array} \right]\)
• D) none of these

---

Definitions:

Natural Endowment

Resources found in nature that have economic value or utility, such as minerals, forests, and water.

Merchandise Trade Deficit

A situation where a country's imports of goods exceed its exports of goods, leading to a negative balance of trade.

Record

A document or electronic file that systematically captures and preserves information or data for future reference or analysis.

Japan

An island country located in East Asia, known for its rich culture, technological advancements, and historical significance.