Use the Elimination Method to Solve the System $$\left\{ \begin{array} { l } x + y = - 8 \\x - y = 12\end{array} \right.$$

question 45

Multiple Choice

Use the elimination method to solve the system.
- $$\left\{ \begin{array} { l } x + y = - 8 \\x - y = 12\end{array} \right.$$

• A) x = 5, y = 14
• B) x = 8, y = -10
• C) x = 2, y = -10
• D) x = 9, y = 5

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Definitions:

75th Percentile

A value below which 75% of the data points in a distribution fall, also known as the third quartile.

sample Data

Collected portions of data from a population used to infer or estimate characteristics of the entire population.

Covariance

A measure of how much two random variables change together.

Standard Deviation

A measure of the amount of variation or dispersion of a set of values; quantifies how much the values of a dataset deviate from the mean.