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 199

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) \(( 6 , - 5,1 )\)

Understanding the criteria for crafting enticing headings in promotional materials.

Recognize the traits of effective transitions in writing.

Identify and explain the function of advance organizers in a document.

Understand the benefits and considerations of structuring content into lists versus paragraphs.

---

Definitions:

Never Married

Refers to an individual who has never entered into a legally recognized marriage or partnership.

U.S. Men and Women

Refers to the adult male and female population residing in the United States, encompassing diverse backgrounds and experiences.

Elderly Parents

Refers to one's parents who have reached an older age, often considered to be 65 years and above, facing aging-related conditions and challenges.

Adult Children

Individuals who are legally adults but are referred to in the context of their relationship with their parents.