Find the Indicated Matrix $A = \left[ \begin{array} { r r r } 4 & - 6 & 4 \\ 8 & - 8 & - 2 \\ 1 & 6 & 6 \end{array} \right]$

question 72

Multiple Choice

Find the indicated matrix.
-Let $A = \left[ \begin{array} { r r r } 4 & - 6 & 4 \\ 8 & - 8 & - 2 \\ 1 & 6 & 6 \end{array} \right]$ and $B = \left[ \begin{array} { r r r } 3 & 6 & 2 \\ 1 & 0 & - 3 \\ - 2 & 8 & - 6 \end{array} \right]$ . Find $A + B$ .

• A) \(\left[ \begin{array} { r r r } 9 & 12 & 6 \\ 7 & - 8 & - 5 \\ - 1 & 14 & 0 \end{array} \right]\)
• B) \(\left[ \begin{array} { r r r } 7 & 0 & 6 \\ 7 & - 8 & 1 \\ 1 & 14 & 0 \end{array} \right]\)
• C) \(\left[ \begin{array} { r r r } 7 & 0 & 6 \\ 9 & - 8 & - 5 \\ - 1 & 14 & 0 \end{array} \right]\)
• D) \(\left[ \begin{array} { r r r } 9 & 12 & 6 \\ 9 & - 8 & 1 \\ 1 & 14 & 0 \end{array} \right]\)

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Definitions:

Currency

A medium of exchange that facilitates trade and is usually issued by a government as legal tender.

Nonbanking Public

The segment of the economy that does not include banks or financial institutions, generally referring to average consumers and businesses.

Money Supply

The complete tally of money-based assets available within an economy at a certain point, counting coins, cash, and holdings in savings and current accounts.

Reserve Requirement

A rephrased definition of Required Reserves: The regulation set by central banks determining the minimum amount of deposits that banks must hold as reserves and not lend out.