Thinking Mathematically (6th Edition)
Thinking Mathematically (6th Edition)
6th Edition
ISBN: 9780321867322
Author: Robert F. Blitzer
Publisher: PEARSON
bartleby

Videos

Textbook Question
Book Icon
Chapter 4.4, Problem 1CP

CHECK POINT 1 Write the following numeral as a Hindu-Arabic numeral:

Chapter 4.4, Problem 1CP, CHECK POINT 1 Write the following numeral as a Hindu-Arabic numeral:

Blurred answer
Students have asked these similar questions
Can you explain how the error term in the CF Algorithm relates to the (m+1)th complete quotient? Also, what would be a good way to explain the connection between these two slides? How can one transition between them for a presentation?
How can I explain the pi example in a presentation? I'm having trouble transitioning between these two slides
McGilla Golf has decided to sell a new line of golf clubs. The clubs will sell for $895 per set and have a variable cost of $431 per set. The company has spent $200,000 for a marketing study that determined the company will sell 80,000 sets per year for seven years. The marketing study also determined that the company will lose sales of 8,600 sets per year of its high-priced clubs. The high-priced clubs sell at $1,325 and have variable costs of $645. The company will also increase sales of its cheap clubs by 10,800 sets per year. The cheap clubs sell for $340 and have variable costs of $141 per set. The fixed costs each year will be $14,350,000. The company has also spent $1,500,000 on research and development for the new clubs. The plant and equipment required will cost $43,700,000 and will be depreciated on a straight-line basis. The new clubs will also require an increase in net working capital of $3,625,000 that will be returned at the end of the project. The tax rate is 25…

Chapter 4 Solutions

Thinking Mathematically (6th Edition)

Ch. 4.1 - Prob. 7CVCCh. 4.1 - Using ∨ for 1 and < for 10, the expanded from <  ...Ch. 4.1 - Q.9. The place value in the Mayan numeration...Ch. 4.1 - Q.10. = = . ...Ch. 4.1 - In Exercises 1-8, evaluate the expression. 1. Ch. 4.1 - In Exercises 1-8, evaluate the expression. 2. Ch. 4.1 - Prob. 3ECh. 4.1 - Prob. 4ECh. 4.1 - In Exercises 1-8, evaluate the expression. 3 4Ch. 4.1 - Prob. 6ECh. 4.1 - Prob. 7ECh. 4.1 - Prob. 8ECh. 4.1 - Prob. 9ECh. 4.1 - Prob. 10ECh. 4.1 - Prob. 11ECh. 4.1 - In Exercises 9-22, write each Hindu-Arabic numeral...Ch. 4.1 - In Exercises 9-22, write each Hindu-Arabic numeral...Ch. 4.1 - In Exercises 9-22, write each Hindu-Arabic numeral...Ch. 4.1 - Prob. 15ECh. 4.1 - Prob. 16ECh. 4.1 - In Exercises 9-22, write each Hindu-Arabic numeral...Ch. 4.1 - Prob. 18ECh. 4.1 - Prob. 19ECh. 4.1 - Prob. 20ECh. 4.1 - In Exercises 9-22, write each Hindu-Arabic numeral...Ch. 4.1 - In Exercises 9-22, write each Hindu-Arabic numeral...Ch. 4.1 - Prob. 23ECh. 4.1 - Prob. 24ECh. 4.1 - Prob. 25ECh. 4.1 - Prob. 26ECh. 4.1 - Prob. 27ECh. 4.1 - Prob. 28ECh. 4.1 - In Exercises 23-32, express each expanded form as...Ch. 4.1 - Prob. 30ECh. 4.1 - Prob. 31ECh. 4.1 - Prob. 32ECh. 4.1 - Prob. 33ECh. 4.1 - Prob. 34ECh. 4.1 - Prob. 35ECh. 4.1 - In Exercises 34-46, use Table 4.1 on page 215 to...Ch. 4.1 - In Exercises 34-46, use Table 4.1 on page 215 to...Ch. 4.1 - Prob. 38ECh. 4.1 - Prob. 39ECh. 4.1 - Prob. 40ECh. 4.1 - Prob. 41ECh. 4.1 - Prob. 42ECh. 4.1 - Prob. 43ECh. 4.1 - Prob. 44ECh. 4.1 - In Exercises 34-46, use Table 4.1 on page 215 to...Ch. 4.1 - Prob. 46ECh. 4.1 - In Exercises 47-60, use Table 4.2 on page 216 to...Ch. 4.1 - In Exercises 47-60, use Table 4.2 on page 216 to...Ch. 4.1 - Prob. 49ECh. 4.1 - Prob. 50ECh. 4.1 - Prob. 51ECh. 4.1 - In Exercises 47-60, use Table 4.2 on page 216 to...Ch. 4.1 - In Exercises 47-60, use Table 4.2 on page 216 to...Ch. 4.1 - In Exercises 47-60, use Table 4.2 on page 216 to...Ch. 4.1 - Prob. 55ECh. 4.1 - Prob. 56ECh. 4.1 - Prob. 57ECh. 4.1 - Prob. 58ECh. 4.1 - Prob. 59ECh. 4.1 - Prob. 60ECh. 4.1 - Prob. 61ECh. 4.1 - Prob. 62ECh. 4.1 - Prob. 63ECh. 4.1 - Prob. 64ECh. 4.1 - Prob. 65ECh. 4.1 - Prob. 66ECh. 4.1 - Prob. 67ECh. 4.1 - Prob. 68ECh. 4.1 - Prob. 69ECh. 4.1 - Prob. 70ECh. 4.1 - Prob. 71ECh. 4.1 - Prob. 72ECh. 4.1 - Prob. 73ECh. 4.1 - Prob. 74ECh. 4.1 - Prob. 75ECh. 4.1 - Prob. 76ECh. 4.1 - Prob. 77ECh. 4.1 - Prob. 78ECh. 4.1 - Prob. 79ECh. 4.1 - Prob. 80ECh. 4.1 - Prob. 81ECh. 4.1 - Explain how to write a Hindu-Arabic numeral in...Ch. 4.1 - 83. Describe one way that the Babylonian system is...Ch. 4.1 - 84. Describe one way that the Mayan system is...Ch. 4.1 - Research activity Write a report on the history of...Ch. 4.1 - Prob. 86ECh. 4.1 - Prob. 87ECh. 4.1 - Prob. 88ECh. 4.1 - Make Sense? In Exercises 86-89, determine whether...Ch. 4.1 - Prob. 90ECh. 4.1 - Prob. 91ECh. 4.1 - Use Babylonian numerals to write the numeral that...Ch. 4.2 - CHECK POINT 1 Convert to base ten. Ch. 4.2 - CHECK POINT 2 Convert to base ten. Ch. 4.2 - CHECK POINT 3 Convert to base ten. Ch. 4.2 - CHECK POINT 4 Convert the base ten numeral 6 to a...Ch. 4.2 - CHECK POINT 5 Convert the base ten numeral 365 to...Ch. 4.2 - CHECK POINT 6 Convert the base ten numeral 51 to a...Ch. 4.2 - CHECK POINT 7 Convert the base ten numeral 2763 to...Ch. 4.2 - In the numeral 324 five , the base is _____. In...Ch. 4.2 - 324 five = ( 3 × _ _ ) + ( 2 × _ _ ) + ( 4 × _ _ )Ch. 4.2 - Prob. 3CVCCh. 4.2 - Prob. 4CVCCh. 4.2 - Prob. 5CVCCh. 4.2 - Fill in each blank so that the resulting statement...Ch. 4.2 - Prob. 7CVCCh. 4.2 - Prob. 1ECh. 4.2 - Prob. 2ECh. 4.2 - In Exercises 1-18, convert the numeral to a...Ch. 4.2 - Prob. 4ECh. 4.2 - Prob. 5ECh. 4.2 - Prob. 6ECh. 4.2 - Prob. 7ECh. 4.2 - Prob. 8ECh. 4.2 - Prob. 9ECh. 4.2 - Prob. 10ECh. 4.2 - Prob. 11ECh. 4.2 - Prob. 12ECh. 4.2 - Prob. 13ECh. 4.2 - Prob. 14ECh. 4.2 - Prob. 15ECh. 4.2 - Prob. 16ECh. 4.2 - Prob. 17ECh. 4.2 - Prob. 18ECh. 4.2 - Prob. 19ECh. 4.2 - Prob. 20ECh. 4.2 - Prob. 21ECh. 4.2 - Prob. 22ECh. 4.2 - Prob. 23ECh. 4.2 - Prob. 24ECh. 4.2 - Prob. 25ECh. 4.2 - In Exercises 19-32, mentally convert each base ten...Ch. 4.2 - Prob. 27ECh. 4.2 - Prob. 28ECh. 4.2 - Prob. 29ECh. 4.2 - Prob. 30ECh. 4.2 - Prob. 31ECh. 4.2 - Prob. 32ECh. 4.2 - Prob. 33ECh. 4.2 - Prob. 34ECh. 4.2 - Prob. 35ECh. 4.2 - Prob. 36ECh. 4.2 - Prob. 37ECh. 4.2 - Prob. 38ECh. 4.2 - Prob. 39ECh. 4.2 - Prob. 40ECh. 4.2 - Prob. 41ECh. 4.2 - Prob. 42ECh. 4.2 - Prob. 43ECh. 4.2 - Prob. 44ECh. 4.2 - In Exercises 33-48, convert each base ten numeral...Ch. 4.2 - Prob. 46ECh. 4.2 - Prob. 47ECh. 4.2 - Prob. 48ECh. 4.2 - Prob. 49ECh. 4.2 - Prob. 50ECh. 4.2 - In Exercises 49-52, use Table 4.1 on page 215 to...Ch. 4.2 - Prob. 52ECh. 4.2 - Prob. 53ECh. 4.2 - In Exercises 53-56, use Table 4.2 on page 216 to...Ch. 4.2 - Prob. 55ECh. 4.2 - Prob. 56ECh. 4.2 - Prob. 57ECh. 4.2 - Prob. 58ECh. 4.2 - 59. Convert to base eight. Ch. 4.2 - Prob. 60ECh. 4.2 - Prob. 61ECh. 4.2 - Prob. 62ECh. 4.2 - Prob. 63ECh. 4.2 - Prob. 64ECh. 4.2 - Read the Blitzer Bonus on page 222. Then use the...Ch. 4.2 - Prob. 66ECh. 4.2 - Prob. 67ECh. 4.2 - Prob. 68ECh. 4.2 - Prob. 69ECh. 4.2 - Prob. 70ECh. 4.2 - Prob. 71ECh. 4.2 - Prob. 72ECh. 4.2 - Make Sense? In Exercises 73-76, determine whether...Ch. 4.2 - Prob. 74ECh. 4.2 - Prob. 75ECh. 4.2 - Prob. 76ECh. 4.2 - In Exercises 77-78, write, in the indicated base,...Ch. 4.2 - Prob. 78ECh. 4.2 - Prob. 79ECh. 4.2 - Prob. 80ECh. 4.2 - Prob. 81ECh. 4.2 - Prob. 82ECh. 4.2 - The following topics are appropriate for either...Ch. 4.2 - The following topics are appropriate for either...Ch. 4.3 - CHECK POINT 1 Add: 32 five + 44 five . _Ch. 4.3 - Prob. 2CPCh. 4.3 - Prob. 3CPCh. 4.3 - Prob. 4CPCh. 4.3 - Prob. 5CPCh. 4.3 - Prob. 6CPCh. 4.3 - Prob. 1CVCCh. 4.3 - Prob. 2CVCCh. 4.3 - Consider the following addition in base eight:    ...Ch. 4.3 - Prob. 4CVCCh. 4.3 - Prob. 5CVCCh. 4.3 - 6. We can use products in base three to perform...Ch. 4.3 - 7. True or False: Computation in bases other than...Ch. 4.3 - Prob. 1ECh. 4.3 - Prob. 2ECh. 4.3 - Prob. 3ECh. 4.3 - Prob. 4ECh. 4.3 -       342 five +   413 five _Ch. 4.3 - Prob. 6ECh. 4.3 - In Exercises 1-12, add in the indicated base. 645...Ch. 4.3 - In Exercises 1-12, add in the indicated base. 632...Ch. 4.3 - In Exercises 1-12, add in the indicated base. 6784...Ch. 4.3 - In Exercises 1-12, add in the indicated base. 10....Ch. 4.3 - In Exercises 1-12, add in the indicated base....Ch. 4.3 - In Exercises 1-12, add in the indicated base. 53 B...Ch. 4.3 - Prob. 13ECh. 4.3 - Prob. 14ECh. 4.3 - Prob. 15ECh. 4.3 - Prob. 16ECh. 4.3 - 475 eight − 267 eight _ _ _ _ _ _ _ _ _ _ _ _ _ _...Ch. 4.3 - In Exercises 13-24, subtract in the indicated...Ch. 4.3 - Prob. 19ECh. 4.3 - Prob. 20ECh. 4.3 - Prob. 21ECh. 4.3 - Prob. 22ECh. 4.3 - Prob. 23ECh. 4.3 - Prob. 24ECh. 4.3 - In Exercises 25-34, multiply in the indicated...Ch. 4.3 - Prob. 26ECh. 4.3 - Prob. 27ECh. 4.3 - Prob. 28ECh. 4.3 - In Exercises 25-34, multiply in the indicated...Ch. 4.3 - Prob. 30ECh. 4.3 - In Exercises 25-34, multiply in the indicated...Ch. 4.3 - In Exercises 25-34, multiply in the indicated...Ch. 4.3 - In Exercises 25-34, multiply in the indicated...Ch. 4.3 - Prob. 34ECh. 4.3 - Prob. 35ECh. 4.3 - In Exercises 35-38, use the multiplication tables...Ch. 4.3 - In Exercises 35-38, use the multiplication tables...Ch. 4.3 - Prob. 38ECh. 4.3 - Prob. 39ECh. 4.3 - In Exercises 39-46, perform the indicated...Ch. 4.3 - Prob. 41ECh. 4.3 - Prob. 42ECh. 4.3 - Prob. 43ECh. 4.3 - Prob. 44ECh. 4.3 - Prob. 45ECh. 4.3 - Prob. 46ECh. 4.3 - Read the Blitzer Bonus on page 233. Then use the...Ch. 4.3 - Prob. 48ECh. 4.3 - Prob. 49ECh. 4.3 - Prob. 50ECh. 4.3 - Prob. 51ECh. 4.3 - Prob. 52ECh. 4.3 - Prob. 53ECh. 4.3 - Prob. 54ECh. 4.3 - Prob. 55ECh. 4.3 - 56. Describe two difficulties that youngsters...Ch. 4.3 - Make Sense? In Exercises 57-60, determine whether...Ch. 4.3 - Make Sense? In Exercises 57-60, determine whether...Ch. 4.3 - Make Sense? In Exercises 57-60, determine whether...Ch. 4.3 - Make Sense? In Exercises 57-60, determine whether...Ch. 4.3 - Prob. 61ECh. 4.3 - Prob. 62ECh. 4.3 - Divide: 31 seven 2426 seven .Ch. 4.3 - 64. Use the Mayan numerals in Table 4.2 on page...Ch. 4.3 - Group members should research various methods that...Ch. 4.3 - 66. Organize a debate. One side represents people...Ch. 4.4 - CHECK POINT 1 Write the following numeral as a...Ch. 4.4 - CHECK POINT 2 Write 2563 as an Egyptian numeral. Ch. 4.4 - Prob. 3CPCh. 4.4 - CHECK POINT 4 Write MCDXLVII as a Hindu-Arabic...Ch. 4.4 - Prob. 5CPCh. 4.4 - Prob. 6CPCh. 4.4 - Prob. 7CPCh. 4.4 - Prob. 1CVCCh. 4.4 - Prob. 2CVCCh. 4.4 - True or False: Like the system in Exercises 1-2,...Ch. 4.4 - Exercises 4-7 involve Roman numerals. Roman...Ch. 4.4 - Prob. 5CVCCh. 4.4 - Prob. 6CVCCh. 4.4 - Exercises 4-7 involve Roman numerals. Roman...Ch. 4.4 - Prob. 8CVCCh. 4.4 - Prob. 9CVCCh. 4.4 - Prob. 10CVCCh. 4.4 - Prob. 11CVCCh. 4.4 - Fill in the blank so that the resulting statement...Ch. 4.4 - Use Table 4.6 on page 236 to solve Exercises 1-12....Ch. 4.4 - Prob. 2ECh. 4.4 - Prob. 3ECh. 4.4 - Prob. 4ECh. 4.4 - Prob. 5ECh. 4.4 - Prob. 6ECh. 4.4 - Prob. 7ECh. 4.4 - Prob. 8ECh. 4.4 - Prob. 9ECh. 4.4 - Prob. 10ECh. 4.4 - Prob. 11ECh. 4.4 - Prob. 12ECh. 4.4 - Prob. 13ECh. 4.4 - Prob. 14ECh. 4.4 - Prob. 15ECh. 4.4 - Prob. 16ECh. 4.4 - Prob. 17ECh. 4.4 - Prob. 18ECh. 4.4 - Prob. 19ECh. 4.4 - Prob. 20ECh. 4.4 - Prob. 21ECh. 4.4 - Prob. 22ECh. 4.4 - Prob. 23ECh. 4.4 - Prob. 24ECh. 4.4 - Prob. 25ECh. 4.4 - In Exercises 13-28, write each Roman numeral as a...Ch. 4.4 - Prob. 27ECh. 4.4 - Prob. 28ECh. 4.4 - Prob. 29ECh. 4.4 - Prob. 30ECh. 4.4 - Prob. 31ECh. 4.4 - Prob. 32ECh. 4.4 - Prob. 33ECh. 4.4 - In Exercise 29-36, write each Hindu-Arabic numeral...Ch. 4.4 - Prob. 35ECh. 4.4 - Prob. 36ECh. 4.4 - Prob. 37ECh. 4.4 - Prob. 38ECh. 4.4 - Prob. 39ECh. 4.4 - Prob. 40ECh. 4.4 - Prob. 41ECh. 4.4 - Prob. 42ECh. 4.4 - Prob. 43ECh. 4.4 - Prob. 44ECh. 4.4 - Prob. 45ECh. 4.4 - In Exercises 43-48, write each Hindu-Arabic...Ch. 4.4 - Prob. 47ECh. 4.4 - Prob. 48ECh. 4.4 - Prob. 49ECh. 4.4 - In Exercises 49-52, write each Ionic Greek numeral...Ch. 4.4 - Prob. 51ECh. 4.4 - Prob. 52ECh. 4.4 - Prob. 53ECh. 4.4 - Prob. 54ECh. 4.4 - Prob. 55ECh. 4.4 - Prob. 56ECh. 4.4 - Prob. 57ECh. 4.4 - Prob. 58ECh. 4.4 - Prob. 59ECh. 4.4 - Prob. 60ECh. 4.4 - Prob. 61ECh. 4.4 - Prob. 62ECh. 4.4 - Prob. 63ECh. 4.4 - Prob. 64ECh. 4.4 - Prob. 65ECh. 4.4 - Prob. 66ECh. 4.4 - Prob. 67ECh. 4.4 - Prob. 68ECh. 4.4 - Prob. 69ECh. 4.4 - Prob. 70ECh. 4.4 - Describe how a number is represented in the...Ch. 4.4 - Prob. 72ECh. 4.4 - Prob. 73ECh. 4.4 - Prob. 74ECh. 4.4 - Prob. 75ECh. 4.4 - Prob. 76ECh. 4.4 - Prob. 77ECh. 4.4 - Make Sense? In Exercises 76-79, determine whether...Ch. 4.4 - Make Sense? In Exercises 76-79, determine whether...Ch. 4.4 - Prob. 80ECh. 4.4 - Prob. 81ECh. 4.4 - Prob. 82ECh. 4.4 - Prob. 83ECh. 4.4 - Prob. 84ECh. 4.4 - Prob. 85ECh. 4.4 - Prob. 86ECh. 4.4 - Prob. 87ECh. 4 - Prob. 1TCh. 4 - Prob. 2TCh. 4 - Prob. 3TCh. 4 - Prob. 4TCh. 4 - Prob. 5TCh. 4 - Prob. 6TCh. 4 - 7. Explain why a symbol for zero is needed in a...Ch. 4 - Prob. 8TCh. 4 - Prob. 9TCh. 4 - Prob. 10TCh. 4 - Prob. 11TCh. 4 - Prob. 12TCh. 4 - In Exercises 13-15, convert each base ten numeral...Ch. 4 - Prob. 14TCh. 4 - Prob. 15TCh. 4 - Prob. 16TCh. 4 - Prob. 17TCh. 4 - Prob. 18TCh. 4 - Prob. 19TCh. 4 - Prob. 20TCh. 4 - Use the symbols in the table shown below to solve...Ch. 4 - Prob. 22TCh. 4 - Prob. 23TCh. 4 - Prob. 24TCh. 4 - In Exercises 1-2, evaluate the expression 11 2Ch. 4 - Prob. 2RECh. 4 - Prob. 3RECh. 4 - Prob. 4RECh. 4 - Prob. 5RECh. 4 - Prob. 6RECh. 4 - Prob. 7RECh. 4 - Prob. 8RECh. 4 - Prob. 9RECh. 4 - Prob. 10RECh. 4 - Prob. 11RECh. 4 - Prob. 12RECh. 4 - Prob. 13RECh. 4 - Prob. 14RECh. 4 - Prob. 15RECh. 4 - In Exercises 13-18, convert the numeral to a...Ch. 4 - Prob. 17RECh. 4 - Prob. 18RECh. 4 - Prob. 19RECh. 4 - Prob. 20RECh. 4 - Prob. 21RECh. 4 - Prob. 22RECh. 4 - Prob. 23RECh. 4 - Prob. 24RECh. 4 - In Exercises 25-28, add in the indicated base. 25....Ch. 4 - In Exercises 25-28, add in the indicated base. 26....Ch. 4 - Prob. 27RECh. 4 - Prob. 28RECh. 4 - Prob. 29RECh. 4 - Prob. 30RECh. 4 - Prob. 31RECh. 4 - In Exercises 29-32, subtract in the indicated...Ch. 4 - Prob. 33RECh. 4 - Prob. 34RECh. 4 - Prob. 35RECh. 4 - Prob. 36RECh. 4 - Prob. 37RECh. 4 - Prob. 38RECh. 4 - Prob. 39RECh. 4 - Prob. 40RECh. 4 - Prob. 41RECh. 4 - Prob. 42RECh. 4 - Prob. 43RECh. 4 - 44. Describe how the Egyptian system or the system...Ch. 4 - Prob. 45RECh. 4 - Prob. 46RECh. 4 - Prob. 47RECh. 4 - Prob. 48RECh. 4 - Prob. 49RECh. 4 - Prob. 50RECh. 4 - Prob. 51RECh. 4 - Use Table 4.8 on page 239 to solve Exercises...Ch. 4 - Prob. 53RECh. 4 - Prob. 54RECh. 4 - Prob. 55RECh. 4 - Prob. 56RECh. 4 - Prob. 57RECh. 4 - Prob. 58RECh. 4 - Describe how the Chinese system or the system in...Ch. 4 - Prob. 60RECh. 4 - Prob. 61RECh. 4 - In Exercises 62-63, write each Hindu-Arabic...Ch. 4 - In Exercises 62-63, write each Hindu-Arabic...Ch. 4 - Prob. 64RECh. 4 - Prob. 65RECh. 4 - Prob. 66RECh. 4 - Prob. 67RECh. 4 - Prob. 68RECh. 4 - Prob. 69RE
Knowledge Booster
Background pattern image
Math
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, subject and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Discrete Mathematics and Its Applications ( 8th I...
Math
ISBN:9781259676512
Author:Kenneth H Rosen
Publisher:McGraw-Hill Education
Text book image
Mathematics for Elementary Teachers with Activiti...
Math
ISBN:9780134392790
Author:Beckmann, Sybilla
Publisher:PEARSON
Text book image
Calculus Volume 1
Math
ISBN:9781938168024
Author:Strang, Gilbert
Publisher:OpenStax College
Text book image
Thinking Mathematically (7th Edition)
Math
ISBN:9780134683713
Author:Robert F. Blitzer
Publisher:PEARSON
Text book image
Discrete Mathematics With Applications
Math
ISBN:9781337694193
Author:EPP, Susanna S.
Publisher:Cengage Learning,
Text book image
Pathways To Math Literacy (looseleaf)
Math
ISBN:9781259985607
Author:David Sobecki Professor, Brian A. Mercer
Publisher:McGraw-Hill Education
Introduction to Integers,Maths - What are integers - English; Author: Mathispower4u;https://www.youtube.com/watch?v=04pURxo-iu0;License: Standard YouTube License, CC-BY
Integers-Middle School Math; Author: MooMooMath and Science;https://www.youtube.com/watch?v=DGWcWtqM_yk;License: Standard YouTube License, CC-BY