Write the Matrix Equation as a System of Linear Equations

question 27

Multiple Choice

Write the matrix equation as a system of linear equations without matrices.
- $$\left[ \begin{array} { l l l } 3 & 2 & 8 \\9 & 0 & 7 \\4 & 9 & 0\end{array} \right] \left[ \begin{array} { l } x \\y \\z\end{array} \right] = \left[ \begin{array} { r } - 2 \\4 \\2\end{array} \right]$$

• A) \(3 x + 2 y + 8 z = - 2\)
• \(9 x + 7 z = 4\)
• \(4 x + 9 y = 2\)
• B) \(3 x - 2 y + 8 z = - 2\)
• \(9 x + 7 z = - 4\)
• \(4 x + 9 y = - 2\)
• C) \(3 x + 2 y + 8 z = - 2\)
• \(9 x + 7 z = 4\)
• \(4 x + 9 z = 2\)
• D) \(3 x + 2 y + 8 z = - 2\)
• \(9 x + 7 y = 4\)
• \(4 x + 9 z = 2\)

Recognize the roles of different brain areas in memory and their interconnections.

Differentiate between sensory and motor functions of speech, including the roles of Wernicke's and Broca's areas.

Identify the evolutionary trends in brain development across vertebrates.

Understand the flow of information in the brain for processing and producing speech.

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Definitions:

Interest Expense

The expense an entity faces for using borrowed capital over a specific time frame.

Inventory Turnover

A financial ratio that measures how often a company's inventory is sold and replaced over a specific period.

Net Profit Margin

A financial metric that shows the percentage of revenue that remains as profit after all expenses, interest, and taxes have been deducted.

FIFO

First In, First Out (FIFO) is an inventory valuation method where goods that are first acquired are the first to be sold, useful in managing inventory and costs.