Find the Square Root If It Is a Real Number $\sqrt { \frac { 1 } { 81 } }$

question 7

Multiple Choice

Find the square root if it is a real number, or state that the expression is not a real number.
- $\sqrt { \frac { 1 } { 81 } }$

• A) 9
• B) \(\frac { 1 } { 9 }\)
• C) \(\frac { 1 } { 6561 }\)
• D) 81

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Definitions:

Opportunity Cost

The cost of forgoing the next best alternative when making a decision, representing the benefits one could have received by taking a different decision.

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