Use the distributive property to calculate each value mentally.
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
- Appendix 1. Review of Real Numbers2h 24m
- Appendix 2. Linear Equations and Inequalities3h 42m
- OLD 9. Sequences, Induction, and Probability Coming soon
- 1. - OLD - Fundamental Concepts of Algebra Coming soon
- 2. - OLD - Equations and Inequalities Coming soon
- OLD 4. Rational Functions Coming soon
- OLD 2. Functions & Graphs Coming soon
- OLD 6. Exponential and Logarithmic Functions Coming soon
- OLD 7. Systems of Equations and Inequalities Coming soon
- OLD 8. Matrices and Determinants Coming soon
- OLD 9. Conic Sections Coming soon
0. Review of Algebra
Exponents
Problem 147
Textbook Question
Write each fraction as a decimal. For repeating decimals, write the answer by first using bar notation and then rounding to the nearest thousandth. 5/9
Verified step by step guidance1
Start by understanding that to convert a fraction to a decimal, you divide the numerator by the denominator. Here, divide 5 by 9.
Perform the division 5 \(\div\) 9. Since 5 is less than 9, the decimal will be less than 1, so add a decimal point and zeros to continue the division.
Recognize that the decimal expansion of 5/9 will be a repeating decimal because 9 is a factor that produces repeating decimals when dividing numbers not multiples of 9.
Identify the repeating digit(s) in the decimal expansion and write the decimal using bar notation to indicate the repeating part. For example, if the decimal repeats '5', write it as 0.\(\overline{5}\).
Finally, round the decimal to the nearest thousandth (three decimal places) by looking at the fourth decimal place and adjusting accordingly.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Converting Fractions to Decimals
Converting a fraction to a decimal involves dividing the numerator by the denominator. This process can result in a terminating decimal, which ends, or a repeating decimal, where one or more digits repeat indefinitely.
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Radical Expressions with Fractions
Repeating Decimals and Bar Notation
A repeating decimal has digits that repeat in a pattern infinitely. Bar notation is used to indicate the repeating part by placing a horizontal bar over the repeating digits, clearly showing which digits repeat.
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Rounding Decimals to a Specific Place Value
Rounding decimals involves approximating a decimal number to a certain place value, such as the nearest thousandth (three decimal places). This is done by looking at the digit immediately after the desired place and adjusting accordingly.
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