Use Matrices and Gauss-Jordan Elimination to Solve Systems
- $$\begin{array} { r } - 4 x + 7 y - z = 39 \\x + 6 y + 9 z = 62 \\- 5 x + y + z = - 1\end{array}$$

question 128

Multiple Choice

Use Matrices and Gauss-Jordan Elimination to Solve Systems
- $$\begin{array} { r } - 4 x + 7 y - z = 39 \\x + 6 y + 9 z = 62 \\- 5 x + y + z = - 1\end{array}$$

• A) \(\{ ( 2,7,2 ) \}\)
• B) \(\{ ( 2,2,7 ) \}\)
• C) \(\{ ( - 2,7,4 ) \}\)
• D) \(\{ ( 4,7 , - 2 ) \}\)

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Definitions:

Fixed Selling

Refers to the selling expenses that do not change with the level of sales.

Financial Disadvantage

A situation where a person or entity is in a less favorable financial position compared to others due to various factors.

Fixed Manufacturing Overhead

The portion of manufacturing overhead costs that remains constant regardless of the volume of production, including expenses such as factory rent and salaries of permanent staff.

Avoidable Cost

Expenses that can be eliminated if a particular decision or action is avoided.