Using Matrix $A=\left[\begin{array}{rrr}3 & 7 & 4 \\2 & -1 & 6\end{array}\right]$

question 46

Multiple Choice

Using matrix $A=\left[\begin{array}{rrr}3 & 7 & 4 \\2 & -1 & 6\end{array}\right]$ and $B=\left[\begin{array}{rrr}-1 & 5 & 2 \\7 & 10 & 1 \\-2 & 5 & -1\end{array}\right]$ which of the following is a true statement?

• A) Matrix A has an inverse.
• B) \(A+B=\left[\begin{array}{rrr}
• 2 & 12 & 6 \\
• 9 & 9 & 7 \\
• -2 & 5 & -1
• \end{array}\right]\)
• C) AB exists and BA does not exist.
• D) BA exists and AB does not exist.

Understand various unifying themes in psychology.

Recognize the importance of past experiences and personal choices in determining future happiness.

Identify the factors that contribute to subjective well-being and life satisfaction.

Distinguish between different types of reasoning and recognize common logical fallacies.

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Definitions:

Forward Rate

An agreed-upon price for a financial transaction that will occur at a future date.

International Fisher Effect

A theory stating that the difference in nominal interest rates between two countries is equal to the expected change in their exchange rates.

Inflation Rate

The pace at which prices for general goods and services escalate, causing a decline in the ability to purchase.

Treasury Bill

Short-term government securities with maturity periods of one year or less, sold at a discount from face value.