Solve the System of Equations by Using the Inverse of the Coefficient

question 104

Multiple Choice

Solve the system of equations by using the inverse of the coefficient matrix.
- $\begin{array}{l}4 x+8 y-z=45 \\x+5 y+7 z=99 \\-7 x+y+z=-19\end{array}$

• A) \( (5,9,7) \)
• B) \( (6,7,7) \)
• C) \( (5,-9,-7) \)
• D) \( (9,7,9) \)

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Definitions:

Cochlea

The structure of the inner ear of mammals that contains the auditory receptors (organ of Corti).

Semicircular Canals

Three fluid-filled tubes in the inner ear that play a key role in maintaining balance and spatial orientation.

Auditory Receptors

Cells or structures in the ear that are sensitive to sound, enabling hearing by converting sound waves into electrical signals.

Hair Cells

Sensory cells located in the inner ear of vertebrates, responsible for converting sound vibrations into electrical signals.