Use Back-Substitution to Solve the System of Linear Equations $$\left\{ \begin{array} { c c c } - 3 x - 9 y - 7 z & = 0 \\4 y + 2 z & = - 8 \\z & = & 6\end{array} \right.$$

question 199

Multiple Choice

Use back-substitution to solve the system of linear equations. $$\left\{ \begin{array} { c c c } - 3 x - 9 y - 7 z & = 0 \\4 y + 2 z & = - 8 \\z & = & 6\end{array} \right.$$

• A) \(( 1,6 , - 5 )\)
• B) \(( - 5,1,6 )\)
• C) \(( 3 , - 5,6 )\)
• D) \(( 1 , - 5,6 )\)
• E) \(( 6 , - 5,1 )\)

Comprehend calculating expected outcomes in scenarios with multiple outcomes and dependent probabilities.

Develop an ability to calculate expected wins and profits in games of chance and betting scenarios.

Gain insight into the calculation of expected profits in business bidding processes.

Understand the calculation of expected values for probabilities involving selection, such as card games and dice rolls.

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