Add and Subtract Matrices
-Let $\mathrm { A } = \left[ \begin{array} { r r r } 4 & - 10 & 2 \\ 8 & - 12 & - 3 \\ 4 & 5 & 9 \end{array} \right]$

question 94

Multiple Choice

Add and Subtract Matrices
-Let $\mathrm { A } = \left[ \begin{array} { r r r } 4 & - 10 & 2 \\ 8 & - 12 & - 3 \\ 4 & 5 & 9 \end{array} \right]$ and $\mathrm { B } = \left[ \begin{array} { r r r } 0 & 10 & 3 \\ 4 & 0 & - 5 \\ - 5 & 8 & - 5 \end{array} \right]$ . Find $\mathrm { A } - \mathrm { B }$

• A)
• \(\left[ \begin{array} { r r r } 4 & - 20 & - 1 \\ 4 & - 12 & 2 \\ 9 & - 3 & 14 \end{array} \right]\)
• B)
• \(\left[ \begin{array} { r r r } 4 & 0 & - 1 \\ 4 & - 12 & 2 \\ 1 & - 3 & 4 \end{array} \right]\)
• C)
• \(\left[ \begin{array} { r r r } 4 & 20 & - 1 \\ 4 & - 12 & 2 \\ 9 & 3 & 14 \end{array} \right]\)
• D)
• \(\left[ \begin{array} { r r r } 4 & 0 & 5 \\ 12 & - 12 & - 8 \\ - 1 & 13 & 4 \end{array} \right]\)

---

Definitions:

Current Ratio

A financial metric evaluating a firm's capacity to settle debts due within a year by dividing its current assets by its current liabilities.

Federal Unemployment Tax

A tax imposed on employers to fund state workforce agencies.

Double-Declining-Balance

An accelerated depreciation method that doubles the rate of depreciation of an asset's value compared to the straight-line method.

Depreciation Rate

The percentage at which an asset's value decreases over time due to use, wear, or obsolescence.