Find the Dimensions of the Matrix $B = \left[ \begin{array} { c } \frac { 2 } { 3 } \\3 \\0 \\- \frac { 4 } { 7 }\end{array} \right]$

question 164

Multiple Choice

Find the dimensions of the matrix $B = \left[ \begin{array} { c } \frac { 2 } { 3 } \\3 \\0 \\- \frac { 4 } { 7 }\end{array} \right]$
And identify the value of the element $b _ { 21 }$ .

• A) \(1 \times 4\) ; \(b _ { 21 } = 3\)
• B) \(4 \times 1\) ; \(b _ { 21 } = 3\)
• C) \(1 \times 4\) ; \(b _ { 21 } = - \frac { 4 } { 7 }\)
• D) \(4 \times 1\) ; \(b _ { 21 } = 0\)
• E) \(1 \times 4\) ; \(b _ { 21 } = \frac { 2 } { 3 }\)

---

Definitions:

Inflation

The rate at which the general level of prices for goods and services is rising, eroding purchasing power.

Great Recession

The severe global economic downturn that took place from late 2007 through early 2009, marked by significant declines in consumer wealth, financial markets, and economic activity worldwide.

Profits

The financial gain that is realized when the amount of revenue gained from a business activity exceeds the expenses, costs, and taxes involved in sustaining the activity.

Price Ceiling

A legal maximum price that can be charged for a product or service, often set by government to control costs for consumers.