Use Cramer's Rule to Solve (If Possible) the System of Equations

question 13

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) \(\left( - \frac { 34 } { 7 } , \frac { 31 } { 7 } \right)\)

Comprehend the effect of age on gender differences in cognitive abilities.

Distinguish between different types of cognitive abilities and their relation to gender.

Understand the controversies surrounding intelligence and cognitive ability research.

Analyze and critique the evidence for and against gender differences in specific cognitive tasks and areas.

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Definitions:

Purchase Price

The amount of money paid to acquire a good, service, or asset.

Combined Equivalent

The unified outcome or measure that represents the aggregate result or impact of several elements.

Scheduled Payments

Payments that are planned and set to occur at regular intervals over a specified period.

Rate of Return

The percentage of profit or loss on an investment over a specific period, indicating the investment's efficiency.