Use Matrices to Solve the System of Equations (If Possible) $\left\{ \begin{array} { l } 5 x + 4 y = - 9 \\x + 6 y = - 33\end{array} \right.$

question 87

Multiple Choice

Use matrices to solve the system of equations (if possible) . Use Gaussian elimination with back-substitution or Gauss-Jordan elimination. $\left\{ \begin{array} { l } 5 x + 4 y = - 9 \\x + 6 y = - 33\end{array} \right.$

• A)x = -3, y = 6
• B)x = 3, y = -6
• C)x = -6, y = 3
• D)x = -6, y = -3
• E)no solution

Recognize the importance of environmental factors and community infrastructure in disease prevention.

Understand the historical development of public health initiatives and their impact on community health.

Analyze the role of government and non-governmental organizations in the advancement of public health.

Identify key figures and their contributions to public health and nursing.

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Definitions:

Conflict-free Spheres

Areas or aspects of life where an individual experiences minimal or no conflict, often contributing to psychological well-being.

Pleasure Seeking Libido

In Freudian psychoanalysis, the drive or urge for obtaining pleasure, primarily through satisfying biological and sexual needs.

Attachment History

An individual's record of emotional bonds and relationships from early life onwards, influencing their interpersonal dynamics and emotional responses in adulthood.

Meta-analyses

A statistical analysis that combines the results of multiple scientific studies.