Given $A = \left[ \begin{array} { c c } - 9 & 8 \\- 6 & - 5 \\10 & - 16\end{array} \right]$

question 41

Multiple Choice

Given $A = \left[ \begin{array} { c c } - 9 & 8 \\- 6 & - 5 \\10 & - 16\end{array} \right]$ and $B = \left[ \begin{array} { l l } 1 & 0 \\2 & 3 \\0 & 4\end{array} \right]$

, solve $2 X - A = 3 B$ , for $X$

• A) \(X = \left[ \begin{array} { l l l }
• - 3 & 4 & 0 \\
• 5 & 2 & 2
• \end{array} \right]\)
• B) \(X = \left[ \begin{array} { l l }
• 5 & 4 \\
• 0 & 1 \\
• 2 & 2
• \end{array} \right]\)
• C) \(X = \left[ \begin{array} { l l }
• 5 & \frac { 1 } { 2 } \\
• 0 & 2 \\
• 5 & 2
• \end{array} \right]\)
• D) \(X = \left[ \begin{array} { c c }
• - 3 & 4 \\
• 0 & 2 \\
• 5 & - 2
• \end{array} \right]\)
• E) none

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Definitions:

Placenta

A membrane that permits the exchange of nutrients and waste products between the mother and her developing child but does not allow the maternal and fetal bloodstreams to mix.

Embryo

An early stage of development in multicellular organisms. In humans, it refers to the stage from the first division of the fertilized egg until it becomes a fetus.

Fetus

The developmental stage of a human from the end of the eighth week after conception until birth, characterized by rapid growth and maturation of bodily structures.

Scaffolding

An educational approach that involves providing learners with temporary support in the initial stages of learning a new concept, gradually removing that support as the learner becomes more proficient.