Perform the Indicated Elementary Row Operations $\mathrm { R } _ { 2 }$

question 146

Multiple Choice

Perform the indicated elementary row operations.
-(2) $\mathrm { R } _ { 2 }$
$\left[ \begin{array} { r r } 5 & - 4 \\ - 3 & - 9 \end{array} \right]$

• A)
• \(\left[ \begin{array} { r r } 10 & - 8 \\ - 6 & - 18 \end{array} \right]\)
• B)
• \(\left[ \begin{array} { r r } 5 & - 4 \\ - 6 & - 18 \end{array} \right]\)
• C)
• \(\left[ \begin{array} { l l } 10 & - 8 \\ - 3 & - 9 \end{array} \right]\)
• D)
• \(\left[ \begin{array} { r r } 5 & - 8 \\ - 3 & - 18 \end{array} \right]\)

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Definitions:

Dilute HCl

A weakened solution of hydrochloric acid in water, commonly used in chemistry for various reactions and tests.

Cleavage

The tendency of minerals to break along flat, defined planes as a result of their crystal structure.

Diagnostic Characteristic

A diagnostic characteristic is a defining feature or attribute that helps in the identification or analysis of conditions, diseases, or materials.

Hydrochloric Acid

A strong, corrosive acid that is a solution of hydrogen chloride (HCl) in water, commonly used in industrial, laboratory, and gastronomic applications.