Solve the System Using the Inverse Method $$\left\{ \begin{aligned}x + 3 y & = - 8 \\21 x + 6 y & = 3\end{aligned} \right.$$

question 161

Multiple Choice

Solve the system using the inverse method.
- $$\left\{ \begin{aligned}x + 3 y & = - 8 \\21 x + 6 y & = 3\end{aligned} \right.$$

• A) \(x = - 3 , y = 1\)
• B) \(x = 1 , y = - 3\)
• C) \(x = - 1 , y = 3\)
• D) \(x = 3 , y = - 1\)

Understand the concepts of measures of central tendency (mean, median, mode) and their differences.

Understand the concepts of measures of dispersion (range, variance, standard deviation) and how they are used to describe data variability.

Recognize different statistical terms and their definitions (e.g., degrees of freedom, frequencies, z-score).

Know the difference between descriptive and inferential statistics.

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