Solve the System by Using Either the Substitution Method or the Elimination-By-Addition

question 22

Multiple Choice

Solve the system by using either the substitution method or the elimination-by-addition method, whichever seems more appropriate. $$\left( \begin{array} { c } \frac { 1 } { 2 } x - \frac { 1 } { 6 } y = - 12 \\\frac { 1 } { 2 } x + \frac { 1 } { 4 } y = 8\end{array} \right)$$

• A)(-10, 46)
• B)(-8, 48)
• C)(-10, 48)
• D)dependent
• E)inconsistent

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Definitions:

Confidence Interval

A range of values, derived from sample statistics, that is likely to contain the value of an unknown population parameter with a specified degree of confidence.

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Individuals whose job is to sell printed or digital encyclopedias, often door-to-door or via direct sales techniques.

Standard Deviation

A statistical measure of the dispersion or variability of a set of data points, indicating how spread out the data points are from the mean.

Confidence Interval

A set of numbers, based on statistics from a sample, that has a high probability of including the value of a not-yet-known parameter of the population, considering a certain level of confidence.