Solve the System $$\left\{ \begin{array} { r } x + 5 y + 2 z = 5 \\2 y + 5 z = - 6 \\z = - 2\end{array} \right.$$

question 46

Multiple Choice

Solve the system. If there is no solution or if the system's equations are dependent, so state.
- $$\left\{ \begin{array} { r } x + 5 y + 2 z = 5 \\2 y + 5 z = - 6 \\z = - 2\end{array} \right.$$

• A) infinitely many solutions; dependent equations
• B) no solution or \(\varnothing\)
• C) \(\{ ( - 1,2 , - 2 ) \}\)
• D) \(\{ ( - 1 , - 2,2 ) \}\)

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