Solve the System of Equations by Using Substitution $$\left\{ \begin{array} { l } 5 x + 3 y = 80 \\2 x + y = 30\end{array} \right.$$

question 206

Multiple Choice

Solve the system of equations by using substitution.
- $$\left\{ \begin{array} { l } 5 x + 3 y = 80 \\2 x + y = 30\end{array} \right.$$

• A) \(x = 0 , y = 0\)
• B) \(x = 10 , y = 10\)
• C) \(x = 0 , y = 10\)
• D) \(x = 10 , y = 0\)

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Definitions:

Validity

The extent to which a concept, conclusion, or measurement is well-founded and likely corresponds accurately to the real world.

Compensatory Approach

A strategy or method used to make up for deficiencies or to provide compensation, often seen in contexts such as employee benefits, environmental mitigation, or in resolving disputes.

Validity Generalization

A concept in psychometrics indicating that the validity of a test is consistent across different situations or groups.

Structured Interview

An interviewing method where all candidates are asked the same predetermined set of questions to ensure consistency and fairness in the hiring process.