Simplify Complex Rational Expressions
- $$\begin{array} { l } 2 x + 6 y + 9 z = 66 \\7 x + 6 y + 8 z = 77 \\9 x + 8 y - 2 z = 51\end{array}$$

question 118

Multiple Choice

Simplify Complex Rational Expressions
- $$\begin{array} { l } 2 x + 6 y + 9 z = 66 \\7 x + 6 y + 8 z = 77 \\9 x + 8 y - 2 z = 51\end{array}$$

• A)
• \(\left[ \begin{array} { r r r | r } 2 & 6 & 9 & 66 \\ 7 & 6 & 8 & 77 \\ 9 & 8 & - 2 & 51 \end{array} \right]\)
• B)
• \(\left[ \begin{array} { r r r | r } 2 & 7 & 9 & 66 \\ 6 & 6 & 8 & 77 \\ 9 & 8 & - 2 & 51 \end{array} \right]\)
• C)
• \(\left[\begin{array}{rrr|r}
• 66 & 9 & 6 & 2 \\
• 77 & 8 & 6 & 7 \\
• 51 & -2 & 8 & 9
• \end{array}\right]\)
• D)
• \(\left[\begin{array}{rrr}
• 2 & 6 & 9 \\
• 7 & 6 & 8 \\
• 9 & 8 & -2
• \end{array}\right]\)

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Definitions:

Fatigue Allowances

A consideration in workspace and job design to allow for rest periods or reduced workload to prevent worker fatigue.

Pre-Determined Time Standards

Established benchmarks for the amount of time required to perform a task, used for planning, scheduling, and assessing employee performance.

Work Schedules

Periods in which employees are assigned to tasks or duties intended to be accomplished within a set timeframe.

Job Specialization

The process of focusing work and roles within an organization on specific tasks or functions to increase efficiency and expertise.