Determine whether each statement is true or false. {1, 2, 4} ∪ {1, 2, 4} = {1, 2, 4}
Table of contents
- 0. Review of Algebra4h 18m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations1h 43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 5m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 22m
- 10. Combinatorics & Probability1h 45m
0. Review of Algebra
Exponents
Problem 78
Textbook Question
Find each product or quotient where possible.
Verified step by step guidance1
Identify the problem as a division of two fractions: \(\frac{7}{6} \div \left(-\frac{2}{3}\right)\).
Recall that dividing by a fraction is the same as multiplying by its reciprocal. So, rewrite the expression as \(\frac{7}{6} \times \left(-\frac{3}{2}\right)\).
Multiply the numerators together and the denominators together: numerator = \$7 \times (-3)\(, denominator = \)6 \times 2$.
Write the product as a single fraction: \(\frac{7 \times (-3)}{6 \times 2}\).
Simplify the fraction by reducing common factors and handling the negative sign appropriately.
Verified video answer for a similar problem:This video solution was recommended by our tutors as helpful for the problem above
Video duration:
2mPlay a video:
Was this helpful?
Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Dividing Fractions
Dividing fractions involves multiplying the first fraction by the reciprocal of the second. The reciprocal of a fraction is obtained by swapping its numerator and denominator. For example, dividing by 2/3 is the same as multiplying by 3/2.
Recommended video:
Dividing Complex Numbers
Multiplying Fractions
To multiply fractions, multiply the numerators together and the denominators together. Simplify the resulting fraction if possible by dividing numerator and denominator by their greatest common divisor.
Recommended video:
Guided course
Multiply Polynomials Using the Distributive Property
Simplifying Negative Fractions
A negative fraction can be written with the negative sign in the numerator, denominator, or in front of the fraction. When multiplying or dividing, keep track of the signs: a negative times a positive is negative, and a negative divided by a positive is negative.
Recommended video:
Guided course
Radical Expressions with Fractions
Watch next
Master Introduction to Exponent Rules with a bite sized video explanation from Patrick
Start learningRelated Videos
Related Practice
Textbook Question
732
views
