Use Back-Substitution to Solve the System of Linear Equations $$\left\{ \begin{array} { c c c } - 3 x - 9 y - 7 z & = 0 \\4 y + 2 z & = - 8 \\z & = & 6\end{array} \right.$$

question 30

Multiple Choice

Use back-substitution to solve the system of linear equations.? $$\left\{ \begin{array} { c c c } - 3 x - 9 y - 7 z & = 0 \\4 y + 2 z & = - 8 \\z & = & 6\end{array} \right.$$

• A)? \(( 1,6 , - 5 )\)
• B)? \(( - 5,1,6 )\)
• C)? \(( 3 , - 5,6 )\)
• D)? \(( 1 , - 5,6 )\)
• E)? \(( 6 , - 5,1 )\)

Understand the demographic shifts and labor dynamics of the period, including the major sources of labor and the conditions under which they worked.

Analyze the motivations and effects of immigration to the United States during this period.

Recognize the expansion of blue-collar work and its driving factors between 1870 and 1910.

Assess the role and impact of key labor movements and reactions to them, including strikes and the formation of labor unions.

---

Definitions:

Cost Of Goods Sold

An accounting term that represents the direct expenses related to the production of goods sold by a company.

Statement Of Income

A financial report that shows a company’s revenues, expenses, and profits over a specific period, commonly referred to as an income statement or profit and loss statement.

ASPE

Accounting Standards for Private Enterprises; a set of accounting standards for privately-held companies in Canada, providing simpler alternatives to International Financial Reporting Standards (IFRS).

IFRS

The International Financial Reporting Standards, a set of accounting standards developed by the International Accounting Standards Board that guide the preparation of financial statements globally.