Write a System of Linear Equations Represented by the Augmented $$\left[ \begin{array} { r r | r } - 7 & 9 & - 1 \\5 & - 6 & 7\end{array} \right]$$

question 18

Multiple Choice

Write a system of linear equations represented by the augmented matrix.
- $$\left[ \begin{array} { r r | r } - 7 & 9 & - 1 \\5 & - 6 & 7\end{array} \right]$$

• A) \(- 7 x - 9 y = 1\)
• \(5 x + 6 y = 7\)
• B) \(- 7 x - 9 y = 1\)
• \(5 x + 6 y = - 7\)
• C) \(- 7 x + 9 y = - 1\)
• \(5 x - 6 y = - 7\)
• D) \(- 7 x + 9 y = - 1\)
• \(5 x - 6 y = 7\)

Understand the basic concepts of chemical bonding and molecular structure, including the types of bonds and molecular shapes.

Distinguish between different types of chemical bonds based on electronegativity differences.

Explain the concept of isotopes and their significance in chemical reactions and biological processes.

Describe the principles of the Bohr model and its applications to simple molecules.

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