Nature of Mathematics (MindTap Course List)
Nature of Mathematics (MindTap Course List)
13th Edition
ISBN: 9781133947257
Author: karl J. smith
Publisher: Cengage Learning
bartleby

Videos

Textbook Question
Book Icon
Chapter 5.7, Problem 7PS

Level 1.

Perform the indicated operations in Problems 5 – 10 using arithmetic for a 12 – hour clock.

a. 5 + 7 b. 4 − 8
c. 2 − 6 d. 9 × 3
Expert Solution & Answer
Check Mark

Want to see the full answer?

Check out a sample textbook solution
Blurred answer
Previous
Chapter 5.7, Problem 6PS
Next
Chapter 5.7, Problem 8PS
Students have asked these similar questions
Hi, please type out the explanation and steps, don’t write it out as it’s hard for me to understanding handwriting. Only do questions 5-7. Thanks.
I need to know how to calculate on my TI-84 Plus calculator.
Evaluate dr. d.x. 12+4

Chapter 5 Solutions

Nature of Mathematics (MindTap Course List)

Ch. 5.1 - Level 1 IN YOUR OWN WORDS Explain each of the...Ch. 5.1 - Prob. 2PSCh. 5.1 - Prob. 3PSCh. 5.1 - Prob. 4PSCh. 5.1 - Prob. 5PSCh. 5.1 - Prob. 6PSCh. 5.1 - Prob. 7PSCh. 5.1 - Prob. 8PSCh. 5.1 - Prob. 9PSCh. 5.1 - Prob. 10PS
Ch. 5.1 - Prob. 11PSCh. 5.1 - Prob. 12PSCh. 5.1 - Prob. 13PSCh. 5.1 - Prob. 14PSCh. 5.1 - Prob. 15PSCh. 5.1 - Prob. 16PSCh. 5.1 - Prob. 17PSCh. 5.1 - Prob. 18PSCh. 5.1 - Prob. 19PSCh. 5.1 - Prob. 20PSCh. 5.1 - Prob. 21PSCh. 5.1 - Level 1 In Problems 15-26, classify each as an...Ch. 5.1 - Prob. 23PSCh. 5.1 - Prob. 24PSCh. 5.1 - Prob. 25PSCh. 5.1 - Prob. 26PSCh. 5.1 - Prob. 27PSCh. 5.1 - Prob. 28PSCh. 5.1 - Prob. 29PSCh. 5.1 - Level 1 Think of three nonassociative word triples...Ch. 5.1 - Prob. 31PSCh. 5.1 - Prob. 32PSCh. 5.1 - Prob. 33PSCh. 5.1 - Prob. 34PSCh. 5.1 - Prob. 35PSCh. 5.1 - Prob. 36PSCh. 5.1 - Prob. 37PSCh. 5.1 - Prob. 38PSCh. 5.1 - Prob. 39PSCh. 5.1 - Prob. 40PSCh. 5.1 - Prob. 41PSCh. 5.1 - Prob. 42PSCh. 5.1 - Prob. 43PSCh. 5.1 - Prob. 44PSCh. 5.1 - Prob. 45PSCh. 5.1 - Prob. 46PSCh. 5.1 - Prob. 47PSCh. 5.1 - Prob. 48PSCh. 5.1 - Prob. 49PSCh. 5.1 - Prob. 50PSCh. 5.1 - Prob. 51PSCh. 5.1 - Prob. 52PSCh. 5.1 - Prob. 53PSCh. 5.1 - Prob. 54PSCh. 5.1 - Prob. 55PSCh. 5.1 - Problem Solving Level 3 Consider a soldier facing...Ch. 5.1 - Prob. 57PSCh. 5.1 - Prob. 58PSCh. 5.1 - Prob. 59PSCh. 5.1 - Problem Solving Level 3 60. The Vanishing...Ch. 5.2 - IN YOUR OWN WORDS What is a prime number?Ch. 5.2 - Prob. 2PSCh. 5.2 - Prob. 3PSCh. 5.2 - Prob. 4PSCh. 5.2 - Prob. 5PSCh. 5.2 - Prob. 6PSCh. 5.2 - Prob. 7PSCh. 5.2 - Prob. 8PSCh. 5.2 - Prob. 9PSCh. 5.2 - Prob. 10PSCh. 5.2 - Prob. 11PSCh. 5.2 - Prob. 12PSCh. 5.2 - Prob. 13PSCh. 5.2 - Prob. 14PSCh. 5.2 - Find all the prime numbers less than or equal to...Ch. 5.2 - Determine the largest prime you need to consider...Ch. 5.2 - Prob. 17PSCh. 5.2 - Prob. 18PSCh. 5.2 - Prob. 19PSCh. 5.2 - Prob. 20PSCh. 5.2 - Prob. 21PSCh. 5.2 - Prob. 22PSCh. 5.2 - Prob. 23PSCh. 5.2 - Prob. 24PSCh. 5.2 - Prob. 25PSCh. 5.2 - Prob. 26PSCh. 5.2 - Prob. 27PSCh. 5.2 - Prob. 28PSCh. 5.2 - Prob. 29PSCh. 5.2 - Prob. 30PSCh. 5.2 - Prob. 31PSCh. 5.2 - Prob. 32PSCh. 5.2 - Prob. 33PSCh. 5.2 - Prob. 34PSCh. 5.2 - Prob. 35PSCh. 5.2 - Prob. 36PSCh. 5.2 - Prob. 37PSCh. 5.2 - Prob. 38PSCh. 5.2 - Prob. 39PSCh. 5.2 - Two movie theaters, UAI and UAII, start their...Ch. 5.2 - Prob. 41PSCh. 5.2 - Shannon is planning a party and wants to give each...Ch. 5.2 - Boxes that are 12 inches tall are stacked next to...Ch. 5.2 - Hot dogs come in packages of 10, while buns come...Ch. 5.2 - IN YOUR OWN WORDS We used a sieve of Eratosthenes...Ch. 5.2 - Prob. 46PSCh. 5.2 - Prob. 47PSCh. 5.2 - Prob. 48PSCh. 5.2 - Prob. 49PSCh. 5.2 - Prob. 50PSCh. 5.2 - Prob. 51PSCh. 5.2 - Prob. 52PSCh. 5.2 - Prob. 53PSCh. 5.2 - Prob. 54PSCh. 5.2 - Prob. 55PSCh. 5.2 - What is the smallest natural number that is...Ch. 5.2 - Prob. 57PSCh. 5.2 - Prob. 58PSCh. 5.2 - Prob. 59PSCh. 5.2 - Prob. 60PSCh. 5.3 - Prob. 1PSCh. 5.3 - Prob. 2PSCh. 5.3 - Prob. 3PSCh. 5.3 - Prob. 4PSCh. 5.3 - Prob. 5PSCh. 5.3 - Prob. 6PSCh. 5.3 - Prob. 7PSCh. 5.3 - Prob. 8PSCh. 5.3 - Prob. 9PSCh. 5.3 - Prob. 10PSCh. 5.3 - Prob. 11PSCh. 5.3 - Prob. 12PSCh. 5.3 - Prob. 13PSCh. 5.3 - Prob. 14PSCh. 5.3 - Prob. 15PSCh. 5.3 - Prob. 16PSCh. 5.3 - Prob. 17PSCh. 5.3 - Prob. 18PSCh. 5.3 - Prob. 19PSCh. 5.3 - Simplify the expressions in Problems 9-37. a....Ch. 5.3 - Prob. 21PSCh. 5.3 - Prob. 22PSCh. 5.3 - Prob. 23PSCh. 5.3 - Prob. 24PSCh. 5.3 - Prob. 25PSCh. 5.3 - Prob. 26PSCh. 5.3 - Prob. 27PSCh. 5.3 - Prob. 28PSCh. 5.3 - Prob. 29PSCh. 5.3 - Prob. 30PSCh. 5.3 - Prob. 31PSCh. 5.3 - Prob. 32PSCh. 5.3 - Prob. 33PSCh. 5.3 - Prob. 34PSCh. 5.3 - Prob. 35PSCh. 5.3 - Prob. 36PSCh. 5.3 - Prob. 37PSCh. 5.3 - Prob. 38PSCh. 5.3 - Prob. 39PSCh. 5.3 - Prob. 40PSCh. 5.3 - Prob. 41PSCh. 5.3 - Prob. 42PSCh. 5.3 - Prob. 43PSCh. 5.3 - Prob. 44PSCh. 5.3 - Prob. 45PSCh. 5.3 - Prob. 46PSCh. 5.3 - Prob. 47PSCh. 5.3 - Prob. 48PSCh. 5.3 - Prob. 49PSCh. 5.3 - Prob. 50PSCh. 5.3 - Prob. 51PSCh. 5.3 - Prob. 52PSCh. 5.3 - Perform the indicated operations. Let k be a...Ch. 5.3 - Perform the indicated operations. Let k be a...Ch. 5.3 - a. State the commutative property. b. Is ...Ch. 5.3 - Prob. 56PSCh. 5.3 - Prob. 57PSCh. 5.3 - Prob. 58PSCh. 5.3 - Multiply 1,234,5679,999,999 a. using a calculator...Ch. 5.3 - Prob. 60PSCh. 5.4 - IN YOUR OWN WORDS What does it mean for a fraction...Ch. 5.4 - IN YOUR OWN WORDS Describe the process for...Ch. 5.4 - Prob. 3PSCh. 5.4 - Prob. 4PSCh. 5.4 - IN YOUR OWN WORDS Use algebra to show where the...Ch. 5.4 - IN YOUR OWN WORDS Use algebra to show where the...Ch. 5.4 - Completely reduce the fractions in Problems 7-18....Ch. 5.4 - Completely reduce the fractions in Problems 7-18....Ch. 5.4 - Completely reduce the fractions in Problems 7-18....Ch. 5.4 - Completely reduce the fractions in Problems 7-18....Ch. 5.4 - Completely reduce the fractions in problem 7-18....Ch. 5.4 - Completely reduce the fractions in problem 7-18....Ch. 5.4 - Completely reduce the fractions in problem 7-18....Ch. 5.4 - Completely reduce the fractions in problem 7-18....Ch. 5.4 - Completely reduce the fractions in problem 7-18....Ch. 5.4 - Completely reduce the fractions in problem 7-18....Ch. 5.4 - Completely reduce the fractions in problem 7-18....Ch. 5.4 - Completely reduce the fractions in problem 7-18....Ch. 5.4 - Perform the indicated operations in problems...Ch. 5.4 - Perform the indicated operations in problems...Ch. 5.4 - Perform the indicated operations in problems...Ch. 5.4 - Perform the indicated operations in problems...Ch. 5.4 - Perform the indicated operations in problems...Ch. 5.4 - Prob. 24PSCh. 5.4 - Prob. 25PSCh. 5.4 - Prob. 26PSCh. 5.4 - Prob. 27PSCh. 5.4 - Prob. 28PSCh. 5.4 - Prob. 29PSCh. 5.4 - Prob. 30PSCh. 5.4 - Prob. 31PSCh. 5.4 - Prob. 32PSCh. 5.4 - Prob. 33PSCh. 5.4 - Prob. 34PSCh. 5.4 - Prob. 35PSCh. 5.4 - Prob. 36PSCh. 5.4 - Prob. 37PSCh. 5.4 - Prob. 38PSCh. 5.4 - Prob. 39PSCh. 5.4 - Prob. 40PSCh. 5.4 - Prob. 41PSCh. 5.4 - Prob. 42PSCh. 5.4 - Prob. 43PSCh. 5.4 - Prob. 44PSCh. 5.4 - Perform the indicated operations in problems...Ch. 5.4 - Perform the indicated operations in problems...Ch. 5.4 - Prob. 47PSCh. 5.4 - Prob. 48PSCh. 5.4 - Prob. 49PSCh. 5.4 - Prob. 50PSCh. 5.4 - Prob. 51PSCh. 5.4 - Prob. 52PSCh. 5.4 - Prob. 53PSCh. 5.4 - Prob. 54PSCh. 5.4 - Prob. 55PSCh. 5.4 - Prob. 56PSCh. 5.4 - Prob. 57PSCh. 5.4 - Prob. 58PSCh. 5.4 - Prob. 59PSCh. 5.4 - Prob. 60PSCh. 5.5 - Prob. 1PSCh. 5.5 - Prob. 2PSCh. 5.5 - Prob. 3PSCh. 5.5 - Prob. 4PSCh. 5.5 - Prob. 5PSCh. 5.5 - Prob. 6PSCh. 5.5 - Prob. 7PSCh. 5.5 - Prob. 8PSCh. 5.5 - Prob. 9PSCh. 5.5 - Prob. 10PSCh. 5.5 - Prob. 11PSCh. 5.5 - Prob. 12PSCh. 5.5 - Prob. 13PSCh. 5.5 - Prob. 14PSCh. 5.5 - Prob. 15PSCh. 5.5 - Prob. 16PSCh. 5.5 - Prob. 17PSCh. 5.5 - Prob. 18PSCh. 5.5 - Prob. 19PSCh. 5.5 - Prob. 20PSCh. 5.5 - Prob. 21PSCh. 5.5 - Prob. 22PSCh. 5.5 - Prob. 23PSCh. 5.5 - Prob. 24PSCh. 5.5 - Prob. 25PSCh. 5.5 - Prob. 26PSCh. 5.5 - Prob. 27PSCh. 5.5 - Prob. 28PSCh. 5.5 - Prob. 29PSCh. 5.5 - Prob. 30PSCh. 5.5 - Prob. 31PSCh. 5.5 - Prob. 32PSCh. 5.5 - Prob. 33PSCh. 5.5 - Prob. 34PSCh. 5.5 - Prob. 35PSCh. 5.5 - Prob. 36PSCh. 5.5 - Prob. 37PSCh. 5.5 - Prob. 38PSCh. 5.5 - If a carpenter wants to make sure that the corner...Ch. 5.5 - Prob. 40PSCh. 5.5 - An antenna is to be erected and held by guy wires....Ch. 5.5 - Prob. 42PSCh. 5.5 - Prob. 43PSCh. 5.5 - Prob. 44PSCh. 5.5 - Prob. 45PSCh. 5.5 - Prob. 46PSCh. 5.5 - Prob. 47PSCh. 5.5 - Prob. 48PSCh. 5.5 - Prob. 49PSCh. 5.5 - Prob. 50PSCh. 5.5 - Prob. 51PSCh. 5.5 - Prob. 52PSCh. 5.5 - Prob. 53PSCh. 5.5 - Prob. 54PSCh. 5.5 - Prob. 55PSCh. 5.5 - Prob. 56PSCh. 5.5 - Prob. 57PSCh. 5.5 - Prob. 58PSCh. 5.5 - Prob. 59PSCh. 5.5 - Prob. 60PSCh. 5.6 - Prob. 1PSCh. 5.6 - Prob. 2PSCh. 5.6 - Prob. 3PSCh. 5.6 - Prob. 4PSCh. 5.6 - Prob. 5PSCh. 5.6 - Prob. 6PSCh. 5.6 - Prob. 7PSCh. 5.6 - Tell whether each number is an element of N a...Ch. 5.6 - Prob. 9PSCh. 5.6 - Prob. 10PSCh. 5.6 - Express each of the numbers in Problems 9-12 as a...Ch. 5.6 - Prob. 12PSCh. 5.6 - Prob. 13PSCh. 5.6 - Prob. 14PSCh. 5.6 - Prob. 15PSCh. 5.6 - Prob. 16PSCh. 5.6 - Prob. 17PSCh. 5.6 - Prob. 18PSCh. 5.6 - Prob. 19PSCh. 5.6 - Prob. 20PSCh. 5.6 - Prob. 21PSCh. 5.6 - Prob. 22PSCh. 5.6 - Prob. 23PSCh. 5.6 - Prob. 24PSCh. 5.6 - Prob. 25PSCh. 5.6 - Carry out the operations with decimal forms in...Ch. 5.6 - Prob. 27PSCh. 5.6 - Prob. 28PSCh. 5.6 - Prob. 29PSCh. 5.6 - Prob. 30PSCh. 5.6 - Prob. 31PSCh. 5.6 - Prob. 32PSCh. 5.6 - Prob. 33PSCh. 5.6 - Prob. 34PSCh. 5.6 - Prob. 35PSCh. 5.6 - Prob. 36PSCh. 5.6 - Prob. 37PSCh. 5.6 - Prob. 38PSCh. 5.6 - Prob. 39PSCh. 5.6 - Prob. 40PSCh. 5.6 - Prob. 41PSCh. 5.6 - Prob. 42PSCh. 5.6 - Prob. 43PSCh. 5.6 - Prob. 44PSCh. 5.6 - Prob. 45PSCh. 5.6 - Prob. 46PSCh. 5.6 - Prob. 47PSCh. 5.6 - Prob. 48PSCh. 5.6 - Prob. 49PSCh. 5.6 - Prob. 50PSCh. 5.6 - Prob. 51PSCh. 5.6 - Prob. 52PSCh. 5.6 - Prob. 53PSCh. 5.6 - Prob. 54PSCh. 5.6 - Prob. 55PSCh. 5.6 - Let be an arbitrary operation in Problems 52-59....Ch. 5.6 - Let be an arbitrary operation in Problems 52-59....Ch. 5.6 - Prob. 58PSCh. 5.6 - Prob. 59PSCh. 5.6 - Prob. 60PSCh. 5.7 - Level 1. IN YOUR OWN WORDS. What do we mean by...Ch. 5.7 - Prob. 2PSCh. 5.7 - Prob. 3PSCh. 5.7 - Prob. 4PSCh. 5.7 - Prob. 5PSCh. 5.7 - Prob. 6PSCh. 5.7 - Level 1. Perform the indicated operations in...Ch. 5.7 - Prob. 8PSCh. 5.7 - Prob. 9PSCh. 5.7 - Prob. 10PSCh. 5.7 - Prob. 11PSCh. 5.7 - Prob. 12PSCh. 5.7 - Prob. 13PSCh. 5.7 - Prob. 14PSCh. 5.7 - Prob. 15PSCh. 5.7 - Prob. 16PSCh. 5.7 - Prob. 17PSCh. 5.7 - Prob. 18PSCh. 5.7 - Prob. 19PSCh. 5.7 - Prob. 20PSCh. 5.7 - Prob. 21PSCh. 5.7 - Prob. 22PSCh. 5.7 - Prob. 23PSCh. 5.7 - Prob. 24PSCh. 5.7 - Prob. 25PSCh. 5.7 - Prob. 26PSCh. 5.7 - Prob. 27PSCh. 5.7 - Prob. 28PSCh. 5.7 - Prob. 29PSCh. 5.7 - Prob. 30PSCh. 5.7 - Prob. 31PSCh. 5.7 - Prob. 32PSCh. 5.7 - Prob. 33PSCh. 5.7 - Prob. 34PSCh. 5.7 - Prob. 35PSCh. 5.7 - Level 2. If you know that your aunt in Problem 34...Ch. 5.7 - Prob. 37PSCh. 5.7 - Prob. 38PSCh. 5.7 - Prob. 39PSCh. 5.7 - Prob. 40PSCh. 5.7 - Prob. 41PSCh. 5.7 - Prob. 42PSCh. 5.7 - Prob. 43PSCh. 5.7 - Prob. 44PSCh. 5.7 - Prob. 45PSCh. 5.7 - Prob. 46PSCh. 5.7 - Prob. 47PSCh. 5.7 - Prob. 48PSCh. 5.7 - Prob. 49PSCh. 5.7 - Prob. 50PSCh. 5.7 - Prob. 51PSCh. 5.7 - Prob. 52PSCh. 5.7 - Prob. 53PSCh. 5.7 - Prob. 54PSCh. 5.7 - Prob. 55PSCh. 5.7 - Prob. 56PSCh. 5.7 - Prob. 57PSCh. 5.7 - Prob. 58PSCh. 5.7 - Prob. 59PSCh. 5.7 - Prob. 60PSCh. 5.8 - Prob. 1PSCh. 5.8 - Prob. 2PSCh. 5.8 - Prob. 3PSCh. 5.8 - Prob. 4PSCh. 5.8 - Prob. 5PSCh. 5.8 - Prob. 6PSCh. 5.8 - Prob. 7PSCh. 5.8 - Prob. 8PSCh. 5.8 - Prob. 9PSCh. 5.8 - Number the letters of the alphabet from 1 to 26;...Ch. 5.8 - Prob. 11PSCh. 5.8 - Prob. 12PSCh. 5.8 - Prob. 13PSCh. 5.8 - Prob. 14PSCh. 5.8 - Prob. 15PSCh. 5.8 - Prob. 16PSCh. 5.8 - Prob. 17PSCh. 5.8 - Prob. 18PSCh. 5.8 - Prob. 19PSCh. 5.8 - Prob. 20PSCh. 5.8 - Prob. 21PSCh. 5.8 - Prob. 22PSCh. 5.8 - Prob. 23PSCh. 5.8 - Prob. 24PSCh. 5.8 - Prob. 25PSCh. 5.8 - Prob. 26PSCh. 5.8 - Prob. 27PSCh. 5.8 - Prob. 28PSCh. 5.8 - Prob. 29PSCh. 5.8 - Prob. 30PSCh. 5.8 - Prob. 31PSCh. 5.8 - Give the decoding key for the encoding keys in...Ch. 5.8 - Prob. 33PSCh. 5.8 - Prob. 34PSCh. 5.8 - Prob. 35PSCh. 5.8 - Prob. 36PSCh. 5.8 - Prob. 37PSCh. 5.8 - Prob. 38PSCh. 5.8 - Prob. 39PSCh. 5.8 - Use Figure 5.25 to encode or decode the messages...Ch. 5.8 - Prob. 41PSCh. 5.8 - Prob. 42PSCh. 5.8 - Prob. 43PSCh. 5.8 - Prob. 44PSCh. 5.8 - Prob. 45PSCh. 5.8 - Prob. 46PSCh. 5.8 - Prob. 47PSCh. 5.8 - Prob. 48PSCh. 5.8 - Prob. 51PSCh. 5.8 - Prob. 52PSCh. 5.8 - Prob. 53PSCh. 5.8 - Prob. 54PSCh. 5.8 - Prob. 55PSCh. 5.8 - Prob. 56PSCh. 5.8 - Prob. 57PSCh. 5.8 - Prob. 58PSCh. 5.8 - Prob. 59PSCh. 5.8 - Prob. 60PSCh. 5.CR - Prob. 1CRCh. 5.CR - Prob. 2CRCh. 5.CR - Prob. 3CRCh. 5.CR - Prob. 4CRCh. 5.CR - Reduce each fraction. If it is reduced, so state....Ch. 5.CR - Prob. 6CRCh. 5.CR - Prob. 7CRCh. 5.CR - Prob. 8CRCh. 5.CR - Prob. 9CRCh. 5.CR - Prob. 10CRCh. 5.CR - Prob. 11CRCh. 5.CR - Prob. 12CRCh. 5.CR - Prob. 13CRCh. 5.CR - Prob. 14CRCh. 5.CR - Prob. 15CRCh. 5.CR - Prob. 16CRCh. 5.CR - Prob. 17CRCh. 5.CR - Do You Weigh Too Much? In the United States, an...Ch. 5.CR - Prob. 19CRCh. 5.CR - Prob. 20CR
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
SEE MORE TEXTBOOKS
Algebraic Complexity with Less Relations; Author: The University of Chicago;https://www.youtube.com/watch?v=ZOKM1JPz650;License: Standard Youtube License
Strassen's Matrix Multiplication - Divide and Conquer - Analysis of Algorithm; Author: Ekeeda;https://www.youtube.com/watch?v=UnpySHwAJsQ;License: Standard YouTube License, CC-BY
Trigonometric Equations with Complex Numbers | Complex Analysis #6; Author: TheMathCoach;https://www.youtube.com/watch?v=zdD8Dab1T2Y;License: Standard YouTube License, CC-BY