Use Cramer's Rule to Solve the System of Equations $\begin{array} { r } - 5 x + 6 y - z = - 8 \\x + 8 y + 5 z = 86 \\- 8 x + y + z = - 35\end{array}$

question 46

Multiple Choice

Use Cramer's rule to solve the system of equations. If D = 0, use another method to determine the solution set.
$\begin{array} { r } - 5 x + 6 y - z = - 8 \\x + 8 y + 5 z = 86 \\- 8 x + y + z = - 35\end{array}$

• A) {(7,3,8)}
• B) {(6,5,8)}
• C) {(6,-5,-8)}
• D) {(5,8,5)}

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Definitions:

Centration

A cognitive limitation in early child development, identified by Piaget, where the child focuses on one aspect of a situation, overlooking other relevant aspects.

Basic Cognitive Processes

Processes such as perception, memory, language, problem-solving, and abstract thinking that underlie all human behaviors and learning.

Attention And Memory

The interplay between the focus of mental resources on specific information and the retention of that information over time.

Reversibility And Conservation

concepts in cognitive development theory by Piaget that describe children's understanding that objects can change form and return to their original form (reversibility) and recognizing that quantitative aspects of an object are conserved despite changes in shape or appearance (conservation).