Write the System of Equations Associated with the Augmented Matrix $$\left[ \begin{array} { r r r | r } 3 & 6 & 2 & - 2 \\6 & 0 & 7 & 4 \\2 & 7 & 0 & 2\end{array} \right]$$

question 48

Multiple Choice

Write the system of equations associated with the augmented matrix. Do not solve.
- $$\left[ \begin{array} { r r r | r } 3 & 6 & 2 & - 2 \\6 & 0 & 7 & 4 \\2 & 7 & 0 & 2\end{array} \right]$$

• A) \(\left\{ \begin{array} { l } 3 x - 6 y + 2 z = - 2 \\ 6 x + 7 z = - 4 \\ 2 x + 7 y = - 2 \end{array} \right.\)
• B) \(\left\{ \begin{array} { l } 3 x + 6 y + 2 z = - 2 \\ 6 x + 7 z = 4 \\ 2 x + 7 y = 2 \end{array} \right.\)
• C) \(\left\{ \begin{array} { l } 3 x + 6 y + 2 z = - 2 \\ 6 x + 7 z = 4 \\ 2 x + 7 z = 2 \end{array} \right.\)

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Definitions:

ECG

Also known as an electrocardiogram, it's a medical test that measures the electrical activity of the heart to identify various heart conditions.

Precordial

Pertaining to that area of the chest wall over the heart for the placement of ECG chest leads.

ECG Chest Leads

Electrodes placed on the chest during an electrocardiogram (ECG) to record the electrical activity of the heart from different angles.

Chest Wall

The area that forms the boundary of the chest cavity, including the ribs, sternum, and spine, providing protection for the thoracic organs.