Suppose That You Are Solving a System of Three Linear $$\left[ \begin{array} { l r r r } 1 & - 12 & - 18 & 12 \\0 & 1 & - 5 & 10 \\0 & - 20 & - 11 & 3\end{array} \right]$$

question 39

Multiple Choice

Suppose that you are solving a system of three linear equations in three variables by the row echelon method ans obtain the following augmented matrix.
$$\left[ \begin{array} { l r r r } 1 & - 12 & - 18 & 12 \\0 & 1 & - 5 & 10 \\0 & - 20 & - 11 & 3\end{array} \right]$$
What row transformation would you perform next?

• A) Add 20 times row 1 to \(- 12\) times row 3 .
• B) Multiply row 3 by \(- \frac { 1 } { 11 }\).
• C) Add \(- \frac { 1 } { 20 }\) times row 2 to row 3 .
• D) Add 20 times row 2 to row \(3 .\)

---

Definitions:

Vegeculture

An ancient form of cultivation involving the propagation of perennial plants and root crops, significant in the development of agriculture in various parts of the world.

Seed Crop Cultivation

The agricultural process of growing plants specifically for the production of seeds for planting, food, or oil.

Stress Lines

Physical or metaphorical lines indicating areas of tension or potential failure, often used in reference to geological faults or to describe points of contention within societies.

Food Production

The creation and processing of products derived from agriculture, livestock, or aquaculture intended for human consumption.