Give All Solutions of the Nonlinear System of Equations, Including $$\begin{array} { l } x y = 18 \\x ^ { 2 } + y ^ { 2 } = 85\end{array}$$

question 127

Multiple Choice

Give all solutions of the nonlinear system of equations, including those with nonreal complex components.
- $$\begin{array} { l } x y = 18 \\x ^ { 2 } + y ^ { 2 } = 85\end{array}$$

• A) \(\{ ( 9,2 ) , ( - 9 , - 2 ) , ( 9 , - 2 ) , ( - 9,2 ) \}\)
• B) \(\{ ( 9,2 ) , ( 2,9 ) , ( 9 , - 2 ) , ( 2 , - 9 ) \}\)
• C) \(\{ ( - 9 , - 2 ) , ( - 2 , - 9 ) , ( - 9,2 ) , ( - 2,9 ) \}\)
• D) \(\{ ( 9,2 ) , ( - 9 , - 2 ) , ( 2,9 ) , ( - 2 , - 9 ) \}\)

Understand the concept of crowding and various theories associated with it.

Define and distinguish between different types of territories and their significance.

Recognize the role of personal space and territoriality in social interactions.

Analyze the impact of environmental factors on group dynamics and individual behavior.

---

Definitions:

Incurred

To suffer or become subject to an obligation, usually a cost or expense, as a result of one's actions or the operation of a business.

Accrual Accounting

A financial recording technique that logs income and expenditures at the time they are accrued or incurred, irrespective of the actual cash flow timing.

Net Income

The total profit of a company after all expenses, taxes, and costs have been subtracted from total revenues.

Sales

The total amount of revenue generated from goods or services sold by a business.