Solve the System,if Possible $$\left\{ \begin{array} { l } 8 x + 5 y + 6 z = 22 \\4 x - 9 y + 2 z = 78 \\7 x - 7 y - 10 z = 57\end{array} \right.$$

question 21

Multiple Choice

Solve the system,if possible.? $$\left\{ \begin{array} { l } 8 x + 5 y + 6 z = 22 \\4 x - 9 y + 2 z = 78 \\7 x - 7 y - 10 z = 57\end{array} \right.$$ ?

• A)x = -1,y = 12,z = -2
• B)x = 5,y = -6,z = 2
• C)x = -5,y = 6,z = -2
• D)x = -5,y = 5,z = -2
• E)no solution;inconsistent system

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Definitions:

Mental Processes

are activities of the mind involved in thinking, understanding, learning, and remembering.

Executive Control Functions

Cognitive processes including planning, working memory, attention, problem solving, verbal reasoning, inhibition, mental flexibility, task switching, and initiation and monitoring of actions.

Practical Intelligence

A form of intelligence related to the ability to solve everyday problems by utilizing experience-based knowledge.

Gardner

Refers to Howard Gardner, a psychologist known for his theory of multiple intelligences, which suggests people have different kinds of intelligences.