Write the Augmented Matrix for the System $$\begin{aligned}7 x - 2 z & = - 9 \\2 y + 7 z & = 9 \\7 x + 9 y + 4 z & = 6\end{aligned}$$

question 241

Multiple Choice

Write the augmented matrix for the system. Do not solve the system.
- $$\begin{aligned}7 x - 2 z & = - 9 \\2 y + 7 z & = 9 \\7 x + 9 y + 4 z & = 6\end{aligned}$$

• A)
• \(\left[ \begin{array} { r r r } 7 & 0 & - 2 \\ 0 & 2 & 7 \\ 7 & 9 & 4 \end{array} \right]\)
• B)
• \(\left[ \begin{array} { r r r | r } 7 & 0 & 7 & - 9 \\ 0 & 2 & 9 & 9 \\ - 2 & 7 & 4 & 6 \end{array} \right]\)
• C)
• \(\left[ \begin{array} { r r r | r } 7 & 0 & - 2 & - 9 \\ 0 & 2 & 7 & 9 \\ 7 & 9 & 4 & 6 \end{array} \right]\)
• D)
• \(\left[ \begin{array} { r r r | r } 7 & - 2 & 0 & - 9 \\ 2 & 7 & 0 & 9 \\ 7 & 9 & 4 & 6 \end{array} \right]\)

Comprehend the influence of environmental and genetic factors on IQ scores and academic achievement.

Recognize the significance of the Flynn effect and how IQ scores have changed over time.

Identify the stages and characteristics of the creative problem-solving process.

Distinguish between divergent and convergent thinking and their applications in problem-solving.

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Definitions:

Standard Cost

The planned cost for a unit of product or service, serving as a benchmark for evaluating performance and setting budgets.

Net Operating Income

The profit a company makes after deducting its operating expenses, without accounting for taxes and interest.

Selling And Administrative Expenses

These are expenses that are not directly tied to the production of goods or services, including costs such as salaries of sales personnel and marketing expenses.

Materials Price Variance

The difference between the actual cost of materials used in production and the standard cost of materials, based on budgeted prices.