Use Cramer's Rule to Solve (If Possible)the System of Equations $$\left\{ \begin{array} { r } - 0.4 x + 0.8 y = 1.6 \\0.2 x + 0.3 y = 2.3\end{array} \right.$$

question 34

Multiple Choice

Use Cramer's Rule to solve (if possible) the system of equations.? $$\left\{ \begin{array} { r } - 0.4 x + 0.8 y = 1.6 \\0.2 x + 0.3 y = 2.3\end{array} \right.$$ ?

• A) \[\left( - \frac { 34 } { 7 } , - \frac { 31 } { 7 } \right)\]
• B) \[\left( \frac { 34 } { 7 } , \frac { 31 } { 7 } \right)\]
• C) \[\left( \frac { 34 } { 7 } , - \frac { 31 } { 7 } \right)\]
• D) \[\left( \frac { 31 } { 7 } , \frac { 34 } { 7 } \right)\]
• E) \[\left( - \frac { 34 } { 7 } , \frac { 31 } { 7 } \right)\]

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Definitions:

Hydroelectric Dams

Structures built across rivers to control water flow and generate electricity through the movement of water through turbines.

Greenhouse Gases

Gases in Earth's atmosphere that trap heat, including carbon dioxide and methane, contributing to global warming and climate change.

Sediment

Particles of rock, organic material, or minerals that are transported and deposited by wind, water, or ice, often forming sedimentary layers.

Hydroelectric Dam

A structure built across a river to hold back water for the purpose of generating electricity through the movement of water.