Find the Inverse of the Matrix $\left[ \begin{array} { c c } 4 & - 5 \\ 1 & 5 \end{array} \right]$

question 91

Multiple Choice

Find the inverse of the matrix $\left[ \begin{array} { c c } 4 & - 5 \\ 1 & 5 \end{array} \right]$ (if it exists) .

• A) \(- \frac { 1 } { 25 } \left[ \begin{array} { c c } 5 & 5 \\ - 1 & 4 \end{array} \right]\)
• B) \(\frac { 1 } { 25 } \left[ \begin{array} { c c } 5 & 5 \\ - 1 & 4 \end{array} \right]\)
• C) \(\frac { 1 } { 25 } \left[ \begin{array} { c c } - 5 & - 5 \\ 1 & - 4 \end{array} \right]\)
• D) \(\frac { 1 } { 25 } \left[ \begin{array} { c c } 4 & - 5 \\ 1 & 5 \end{array} \right]\)
• E) does not exist

Understand the allocation of service department costs to production departments.

Comprehend the challenges and outcomes of acquiring and charging for large central systems.

Analyze the profitability and strategic decision-making through cost allocations in specific industries.

Recognize the impact of cost allocation on resource utilization and managerial decisions.

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Definitions:

Refractometer

A device used to measure the refractive index of a solution such as battery electrolyte or anti-freeze solution.

Specific Gravity

A metric indicating the ratio of the density of a substance to the density of a reference substance.

Rated CCA

Cold Cranking Amps rating, indicating a battery's ability to start an engine in cold temperatures.

Acceptable Voltage

The range of voltage within which an electrical device or system operates safely and effectively.