Write the Augmented Matrix for the System $\begin{array} { r } 7 x + 3 z - 2 = 0 \\2 y + 6 z - 20 = 0 \\3 x + 9 y + 2 z - 12 = 0\end{array}$

question 111

Multiple Choice

Write the augmented matrix for the system. Do not solve the system.
$\begin{array} { r } 7 x + 3 z - 2 = 0 \\2 y + 6 z - 20 = 0 \\3 x + 9 y + 2 z - 12 = 0\end{array}$

• A) \(\left[ \begin{array} { r r r | r }
• 7 & 0 & 3 & 2 \\
• 0 & 2 & 9 & 20 \\
• 3 & 6 & 2 & 12
• \end{array} \right]\)
• B) \(\left[ \begin{array} { l l l }
• 7 & 0 & 3 \\
• 0 & 2 & 6 \\
• 3 & 9 & 2
• \end{array} \right]\)
• C) \(\left[ \begin{array} { r r r | r }
• 7 & 3 & 0 & 2 \\
• 2 & 6 & 0 & 20 \\
• 3 & 9 & 2 & 12
• \end{array} \right]\)
• D) \(\left[ \begin{array} { c c c | c }
• 7 & 0 & 3 & 2 \\
• 0 & 2 & 6 & 20 \\
• 3 & 9 & 2 & 12
• \end{array} \right]\)

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Definitions:

Nervous System

The complex network of nerve cells and fibers that transmits nerve impulses between parts of the body.

Membrane

A thin layer of tissue that covers a surface, lines a cavity, or divides a space or organ.

Positively Charged

An electrical condition where an object or particle has more protons than electrons, giving it a net positive electric charge.

Negatively Charged

Having more electrons than protons, resulting in a net negative electrical charge.