Probability and Z-Scores

Please see the attached file for the fully formatted problems.

Complex Fraction, Least Common Denominator, Simplifying a Rational Expression

1. What is a complex fraction? What are the two ways to simplify a complex fraction? Show an example 2. What is the least common denominator? How do we use the least common denominator when adding rational expressions? 3. When solving a rational equation, why it is OK to remove the denominator by multiplying both sides ...continues