Solve the System for X and Y Using Cramer's Rule $$\begin{array} { l } x + a y = \frac { 1 } { a } \\x + b y = \frac { 1 } { b }\end{array}$$

question 155

Multiple Choice

Solve the system for x and y using Cramer's rule. Assume a and b are nonzero constants.
- $$\begin{array} { l } x + a y = \frac { 1 } { a } \\x + b y = \frac { 1 } { b }\end{array}$$

• A) \(\left\{ \left( \frac { 1 } { a b } , \frac { a - b } { a b } \right) \right\}\)
• B) \(\left\{ \left\{ b + a , - \frac { 1 } { a b } \right) \right\}\)
• C) \(\left\{ \left( \frac { \mathrm { b } - \mathrm { a } } { \mathrm { ab } } , - \frac { 1 } { \mathrm { ab } } \right) \right\}\)
• D) \(\left\{ \left\{ \frac { a + b } { a b } , - \frac { 1 } { a b } \right) \right\}\)

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Evaluation Phase

A stage in a process where the outcomes are assessed to determine their success, effectiveness, or value compared to the stated objectives or criteria.

Planning Gap

The difference between a company’s current performance and its desired goals, often leading to strategic changes to bridge the gap.

Contribution Margin

A financial metric that represents the difference between sales revenue and variable costs, indicating how much revenue contributes to fixed costs and profit.

Break-Even Point

The point at which total costs match total revenue, meaning there is neither profit nor loss.