Decide Whether or Not the Matrices Are Inverses of Each $\left[ \begin{array} { l l } 5 & 3 \\ 3 & 2 \end{array} \right]$

question 164

Multiple Choice

Decide whether or not the matrices are inverses of each other.
- $\left[ \begin{array} { l l } 5 & 3 \\ 3 & 2 \end{array} \right]$ and $\left[ \begin{array} { r r } 2 & - 3 \\ - 3 & 5 \end{array} \right]$

• A) Yes
• B) \(\mathrm { No }\)

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Definitions:

Breakeven

The point at which costs or expenses and income are equal, and there is no net loss or gain.

Mark-up

The amount added to the cost price of goods to cover overhead and profit; a percentage of the cost price.

Breakeven

A financial situation where revenue equals costs, resulting in neither profit nor loss.

Mark-up

The margin calculated by subtracting the cost of a product or service from its sale price, then dividing by the cost, expressed as a percentage.