Solve the Equation for X $\left| \begin{array} { r r } - 2 & 5 \\1 & x\end{array} \right| = - 9$

question 345

Multiple Choice

Solve the equation for x.
$\left| \begin{array} { r r } - 2 & 5 \\1 & x\end{array} \right| = - 9$

• A) {-9}
• B) {2}
• C) {7}
• D) \(\varnothing\)

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Definitions:

Premolar

A type of tooth located between the canine teeth and molars in the mouth, used for crushing and grinding food.

Incisor

A front tooth specialized in cutting food, found in both the upper and lower jaws of mammals.

Molar

A tooth adapted for grinding, located in the posterior part of the mouth in both the upper and lower jawbones.

Muscularis

A layer of muscle found in various parts of the digestive system, responsible for segmental contractions and peristaltic movement.