Find the Inverse of the Matrix Below, If It Exists $\left[ \begin{array} { c c } - 8 & 1 \\- 1 & - 5\end{array} \right]$

question 49

Multiple Choice

Find the inverse of the matrix below, if it exists. $\left[ \begin{array} { c c } - 8 & 1 \\- 1 & - 5\end{array} \right]$

• A) \(\frac { 1 } { 41 } \left[ \begin{array} { c c }
• - 5 & - 1 \\
• 1 & - 8
• \end{array} \right]\)
• B) \(\frac { 1 } { 39 } \left[ \begin{array} { c c }
• - 5 & - 1 \\
• 1 & - 8
• \end{array} \right]\)
• C) \(\frac { 1 } { 41 } \left[ \begin{array} { c c }
• - 8 & - 1 \\
• 1 & - 5
• \end{array} \right]\)
• D) \(\frac { 1 } { 39 } \left[ \begin{array} { c c }
• - 8 & - 1 \\
• 1 & - 5
• \end{array} \right]\)
• E)The inverse of the matrix does not exist.

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Definitions:

Individual Score

The specific performance or result attained by an individual in an assessment or evaluation.

Dependent Samples

Pairs or groups of observations in a study that are related or matched in some way.

Normal Curve

Curve resulting from the plot of values with a normal distribution. It is often called a bell curve because of its shape.

Normal Curve

A bell-shaped curve that represents the distribution of scores or variables where most measurements are concentrated around the mean in a symmetric way.