Intermediate Algebra – Student Workbook – Second Edition 2013

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$Lesson 2a – Assessment - Scottsdale Community College - Math Blog$

Lesson 4a – Introduction to Logarithms Practice Problems 3. Complete the table filling in the missing forms Exponential Form Logarithmic Form a) 3 2 = 9 b) 2 -3 = 8 1 c) Log 4 1024 = 5 d) Log 3 1200 = 2x 4. Solve each Logarithmic Function for x. Check your answer. IDENTIFY the final result in EXACT form then in rounded form as indicated by the problem. a) b) c) d) e) f) ( ) g) ( ) h) ( ) Scottsdale Community College Page 156 Intermediate Algebra
Lesson 4a – Introduction to Logarithms Practice Problems 5. The Richter scale was developed by Charles Richter of the California Institute of Technology in 1935. A single number, called the magnitude, is assigned to quantify the amount of seismic energy released by an earthquake. The magnitude, M, of an earthquake on the Richter scale can be approximated by the formula ( ) where I is the intensity of the earthquake, measured by a seismograph located 8 km from the epicenter (using the Lillie Empirical Formula). Example 1: If an earthquake has an intensity of 100 then the magnitude would be ( ). Entering it into the calculator, we find that the magnitude of the earthquake is 2. Example 2: If an earthquake has a magnitude of 4.5 (M=4.5), the Intensity would be calculated by solving ( ) We can rewrite this as an exponent. The new formula would be or . a) The intensity of an earthquake with magnitude 6 on the Richter scale is _______________ times greater than an earthquake with magnitude 5. b) The intensity of an earthquake with magnitude 7 on the Richter scale is _______________ times greater than an earthquake with magnitude 5. c) On March 27, 1964, Anchorage, Alaska was hit by an earthquake with Magnitude 8.5. Determine the intensity of this earthquake. d) Earthquakes that measure less than 3 on the Richter scale are known as microquakes, and are not felt by humans. Determine the intensity of an earthquake with a magnitude of 3. e) A major earthquake is the one which registers more than 7 on the Richter scale. Determine the intensity of an earthquake with a magnitude of 7. Scottsdale Community College Page 157 Intermediate Algebra
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Scottsdale Community College Interm
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Table of Contents Lesson 1a - Intro
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Lesson 1a - Introduction to Functio
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Lesson 5b - Solving Quadratic Equat
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Lesson 6a - Exponents and Rational
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Lesson 6b - Rational Exponents & Ra
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Lesson 6b - Rational Exponents and
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Appendix A: You Try Answers Lesson
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Appendix A: You Try Answers You Try
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Intermediate Algebra – Student Workbook – Second Edition 2013

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