Algebra: Structure And Method, Book 1
Algebra: Structure And Method, Book 1
(REV)00 Edition
ISBN: 9780395977224
Author: Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher: McDougal Littell
bartleby

Concept explainers

bartleby

Videos

Question
Book Icon
Chapter 9.7, Problem 3OE
To determine

To express: the value of the two-digit number in terms of t and u .

Expert Solution & Answer
Check Mark

Answer to Problem 3OE

The value of 2-digit number is 11u+50 .

Explanation of Solution

Given information:

A two-digit number has tens digit t and units digit u .

The tens exceeds the units digit by 5.

Formula used:

Digit problems are based on our decimal system of numeration.

Step1. The problem asks for the original number.

Step2. Let t = the tens digit of the original number.

Let u = the units digit of the original number.

Step3. Use the facts of the problem to write two equations.

Step4. Solve the equations.

Calculation:

Consider ,

Let u = the units digit of the original number.

Therefore, the tens digit will be =u+5

    TensUnitsValue
    Original numberu+5 u=10(u+5)+u=10u+50+u=11u+50

Hence, the value of 2-digit is 11u+50 .

Chapter 9 Solutions

Algebra: Structure And Method, Book 1

Ch. 9.1 - Prob. 2WECh. 9.1 - Prob. 3WECh. 9.1 - Prob. 4WECh. 9.1 - Prob. 5WECh. 9.1 - Prob. 6WECh. 9.1 - Prob. 7WECh. 9.1 - Prob. 8WECh. 9.1 - Prob. 9WECh. 9.1 - Prob. 10WECh. 9.1 - Prob. 11WECh. 9.1 - Prob. 12WECh. 9.1 - Prob. 13WECh. 9.1 - Prob. 14WECh. 9.1 - Prob. 15WECh. 9.1 - Prob. 16WECh. 9.1 - Prob. 17WECh. 9.1 - Prob. 18WECh. 9.1 - Prob. 19WECh. 9.1 - Prob. 20WECh. 9.1 - Prob. 21WECh. 9.1 - Prob. 22WECh. 9.1 - Prob. 23WECh. 9.1 - Prob. 24WECh. 9.1 - Prob. 1MRECh. 9.1 - Prob. 2MRECh. 9.1 - Prob. 3MRECh. 9.1 - Prob. 4MRECh. 9.1 - Prob. 5MRECh. 9.1 - Prob. 6MRECh. 9.1 - Prob. 1CECh. 9.1 - Prob. 2CECh. 9.1 - Prob. 3CECh. 9.1 - Prob. 4CECh. 9.2 - Prob. 1OECh. 9.2 - Prob. 2OECh. 9.2 - Prob. 3OECh. 9.2 - Prob. 4OECh. 9.2 - Prob. 5OECh. 9.2 - Prob. 6OECh. 9.2 - Prob. 7OECh. 9.2 - Prob. 8OECh. 9.2 - Prob. 9OECh. 9.2 - Prob. 10OECh. 9.2 - Prob. 11OECh. 9.2 - Prob. 12OECh. 9.2 - Prob. 1WECh. 9.2 - Prob. 2WECh. 9.2 - Prob. 3WECh. 9.2 - Prob. 4WECh. 9.2 - Prob. 5WECh. 9.2 - Prob. 6WECh. 9.2 - Prob. 7WECh. 9.2 - Prob. 8WECh. 9.2 - Prob. 9WECh. 9.2 - Prob. 10WECh. 9.2 - Prob. 11WECh. 9.2 - Prob. 12WECh. 9.2 - Prob. 13WECh. 9.2 - Prob. 14WECh. 9.2 - Prob. 15WECh. 9.2 - Prob. 16WECh. 9.2 - Prob. 17WECh. 9.2 - Prob. 18WECh. 9.2 - Prob. 19WECh. 9.2 - Prob. 20WECh. 9.2 - Prob. 21WECh. 9.2 - Prob. 22WECh. 9.2 - Prob. 23WECh. 9.2 - Prob. 24WECh. 9.2 - Prob. 25WECh. 9.2 - Prob. 26WECh. 9.2 - Prob. 27WECh. 9.2 - Prob. 28WECh. 9.2 - Prob. 29WECh. 9.2 - Prob. 30WECh. 9.2 - Prob. 31WECh. 9.2 - Prob. 32WECh. 9.2 - Prob. 33WECh. 9.2 - Prob. 34WECh. 9.2 - Prob. 35WECh. 9.2 - Prob. 36WECh. 9.2 - Prob. 37WECh. 9.2 - Prob. 38WECh. 9.2 - Prob. 39WECh. 9.2 - Prob. 40WECh. 9.2 - Prob. 41WECh. 9.2 - Prob. 1MRECh. 9.2 - Prob. 2MRECh. 9.2 - Prob. 3MRECh. 9.2 - Prob. 4MRECh. 9.2 - Prob. 5MRECh. 9.2 - Prob. 6MRECh. 9.2 - Prob. 7MRECh. 9.2 - Prob. 8MRECh. 9.2 - Prob. 9MRECh. 9.2 - Prob. 10MRECh. 9.2 - Prob. 11MRECh. 9.2 - Prob. 12MRECh. 9.3 - Prob. 1OECh. 9.3 - Prob. 2OECh. 9.3 - Prob. 3OECh. 9.3 - Prob. 4OECh. 9.3 - Prob. 5OECh. 9.3 - Prob. 6OECh. 9.3 - Prob. 7OECh. 9.3 - Prob. 8OECh. 9.3 - Prob. 9OECh. 9.3 - Prob. 10OECh. 9.3 - Prob. 11OECh. 9.3 - Prob. 12OECh. 9.3 - Prob. 1PCh. 9.3 - Prob. 2PCh. 9.3 - Prob. 3PCh. 9.3 - Prob. 4PCh. 9.3 - Prob. 5PCh. 9.3 - Prob. 6PCh. 9.3 - Prob. 7PCh. 9.3 - Prob. 8PCh. 9.3 - Prob. 9PCh. 9.3 - Prob. 10PCh. 9.3 - Prob. 11PCh. 9.3 - Prob. 12PCh. 9.3 - Prob. 13PCh. 9.3 - Prob. 14PCh. 9.3 - Prob. 15PCh. 9.3 - Prob. 16PCh. 9.3 - Prob. 17PCh. 9.3 - Prob. 18PCh. 9.3 - Prob. 19PCh. 9.3 - Prob. 20PCh. 9.3 - Prob. 21PCh. 9.3 - Prob. 22PCh. 9.3 - Prob. 1MRECh. 9.3 - Prob. 2MRECh. 9.3 - Prob. 3MRECh. 9.3 - Prob. 4MRECh. 9.3 - Prob. 5MRECh. 9.3 - Prob. 6MRECh. 9.3 - Prob. 7MRECh. 9.3 - Prob. 8MRECh. 9.3 - Prob. 9MRECh. 9.3 - Prob. 10MRECh. 9.3 - Prob. 11MRECh. 9.3 - Prob. 12MRECh. 9.4 - Prob. 1OECh. 9.4 - Prob. 2OECh. 9.4 - Prob. 3OECh. 9.4 - Prob. 4OECh. 9.4 - Prob. 5OECh. 9.4 - Prob. 6OECh. 9.4 - Prob. 7OECh. 9.4 - Prob. 8OECh. 9.4 - Prob. 9OECh. 9.4 - Prob. 1WECh. 9.4 - Prob. 2WECh. 9.4 - Prob. 3WECh. 9.4 - Prob. 4WECh. 9.4 - Prob. 5WECh. 9.4 - Prob. 6WECh. 9.4 - Prob. 7WECh. 9.4 - Prob. 8WECh. 9.4 - Prob. 9WECh. 9.4 - Prob. 10WECh. 9.4 - Prob. 11WECh. 9.4 - Prob. 12WECh. 9.4 - Prob. 13WECh. 9.4 - Prob. 14WECh. 9.4 - Prob. 15WECh. 9.4 - Prob. 16WECh. 9.4 - Prob. 17WECh. 9.4 - Prob. 18WECh. 9.4 - Prob. 19WECh. 9.4 - Prob. 20WECh. 9.4 - Prob. 21WECh. 9.4 - Prob. 22WECh. 9.4 - Prob. 23WECh. 9.4 - Prob. 24WECh. 9.4 - Prob. 25WECh. 9.4 - Prob. 26WECh. 9.4 - Prob. 27WECh. 9.4 - Prob. 28WECh. 9.4 - Prob. 29WECh. 9.4 - Prob. 30WECh. 9.4 - Prob. 31WECh. 9.4 - Prob. 1PCh. 9.4 - Prob. 2PCh. 9.4 - Prob. 3PCh. 9.4 - Prob. 4PCh. 9.4 - Prob. 5PCh. 9.4 - Prob. 6PCh. 9.4 - Prob. 7PCh. 9.4 - Prob. 8PCh. 9.4 - Prob. 9PCh. 9.4 - Prob. 10PCh. 9.4 - Prob. 1MRECh. 9.4 - Prob. 2MRECh. 9.4 - Prob. 3MRECh. 9.4 - Prob. 4MRECh. 9.4 - Prob. 5MRECh. 9.4 - Prob. 6MRECh. 9.4 - Prob. 7MRECh. 9.4 - Prob. 8MRECh. 9.4 - Prob. 9MRECh. 9.4 - Prob. 10MRECh. 9.4 - Prob. 11MRECh. 9.4 - Prob. 12MRECh. 9.5 - Prob. 1OECh. 9.5 - Prob. 2OECh. 9.5 - Prob. 3OECh. 9.5 - Prob. 4OECh. 9.5 - Prob. 5OECh. 9.5 - Prob. 6OECh. 9.5 - Prob. 7OECh. 9.5 - Prob. 8OECh. 9.5 - Prob. 9OECh. 9.5 - Prob. 1WECh. 9.5 - Prob. 2WECh. 9.5 - Prob. 3WECh. 9.5 - Prob. 4WECh. 9.5 - Prob. 5WECh. 9.5 - Prob. 6WECh. 9.5 - Prob. 7WECh. 9.5 - Prob. 8WECh. 9.5 - Prob. 9WECh. 9.5 - Prob. 10WECh. 9.5 - Prob. 11WECh. 9.5 - Prob. 12WECh. 9.5 - Prob. 13WECh. 9.5 - Prob. 14WECh. 9.5 - Prob. 15WECh. 9.5 - Prob. 16WECh. 9.5 - Prob. 17WECh. 9.5 - Prob. 18WECh. 9.5 - Prob. 19WECh. 9.5 - Prob. 20WECh. 9.5 - Prob. 21WECh. 9.5 - Prob. 22WECh. 9.5 - Prob. 23WECh. 9.5 - Prob. 24WECh. 9.5 - Prob. 25WECh. 9.5 - Prob. 26WECh. 9.5 - Prob. 27WECh. 9.5 - Prob. 28WECh. 9.5 - Prob. 29WECh. 9.5 - Prob. 30WECh. 9.5 - Prob. 31WECh. 9.5 - Prob. 32WECh. 9.5 - Prob. 33WECh. 9.5 - Prob. 34WECh. 9.5 - Prob. 35WECh. 9.5 - Prob. 36WECh. 9.5 - Prob. 37WECh. 9.5 - Prob. 38WECh. 9.5 - Prob. 39WECh. 9.5 - Prob. 40WECh. 9.5 - Prob. 41WECh. 9.5 - Prob. 42WECh. 9.5 - Prob. 43WECh. 9.5 - Prob. 44WECh. 9.5 - Prob. 45WECh. 9.5 - Prob. 46WECh. 9.5 - Prob. 1MPCh. 9.5 - Prob. 2MPCh. 9.5 - Prob. 3MPCh. 9.5 - Prob. 4MPCh. 9.5 - Prob. 5MPCh. 9.5 - Prob. 6MPCh. 9.5 - Prob. 7MPCh. 9.5 - Prob. 8MPCh. 9.5 - Prob. 9MPCh. 9.5 - Prob. 10MPCh. 9.5 - Prob. 11MPCh. 9.5 - Prob. 12MPCh. 9.5 - Prob. 13MPCh. 9.5 - Prob. 14MPCh. 9.5 - Prob. 15MPCh. 9.5 - Prob. 16MPCh. 9.5 - Prob. 17MPCh. 9.5 - Prob. 18MPCh. 9.5 - Prob. 19MPCh. 9.5 - Prob. 20MPCh. 9.5 - Prob. 21MPCh. 9.5 - Prob. 22MPCh. 9.5 - Prob. 23MPCh. 9.5 - Prob. 24MPCh. 9.5 - Prob. 25MPCh. 9.5 - Prob. 26MPCh. 9.5 - Prob. 27MPCh. 9.5 - Prob. 1PCh. 9.5 - Prob. 2PCh. 9.5 - Prob. 3PCh. 9.5 - Prob. 4PCh. 9.5 - Prob. 5PCh. 9.5 - Prob. 6PCh. 9.5 - Prob. 7PCh. 9.5 - Prob. 8PCh. 9.5 - Prob. 9PCh. 9.5 - Prob. 10PCh. 9.5 - Prob. 11PCh. 9.5 - Prob. 12PCh. 9.5 - Prob. 13PCh. 9.5 - Prob. 14PCh. 9.5 - Prob. 15PCh. 9.5 - Prob. 16PCh. 9.5 - Prob. 17PCh. 9.5 - Prob. 18PCh. 9.5 - Prob. 19PCh. 9.5 - Prob. 20PCh. 9.5 - Prob. 21PCh. 9.5 - Prob. 22PCh. 9.5 - Prob. 23PCh. 9.5 - Prob. 24PCh. 9.5 - Prob. 25PCh. 9.5 - Prob. 26PCh. 9.5 - Prob. 27PCh. 9.5 - Prob. 28PCh. 9.5 - Prob. 29PCh. 9.5 - Prob. 30PCh. 9.5 - Prob. 31PCh. 9.5 - Prob. 32PCh. 9.5 - Prob. 1MRECh. 9.5 - Prob. 2MRECh. 9.5 - Prob. 3MRECh. 9.5 - Prob. 4MRECh. 9.5 - Prob. 5MRECh. 9.5 - Prob. 6MRECh. 9.5 - Prob. 7MRECh. 9.5 - Prob. 8MRECh. 9.5 - Prob. 9MRECh. 9.5 - Prob. 10MRECh. 9.5 - Prob. 1CECh. 9.5 - Prob. 2CECh. 9.5 - Prob. 3CECh. 9.5 - Prob. 1STCh. 9.5 - Prob. 2STCh. 9.5 - Prob. 3STCh. 9.5 - Prob. 4STCh. 9.5 - Prob. 5STCh. 9.5 - Prob. 6STCh. 9.5 - Prob. 7STCh. 9.5 - Prob. 8STCh. 9.5 - Prob. 9STCh. 9.6 - Prob. 1OECh. 9.6 - Prob. 2OECh. 9.6 - Prob. 3OECh. 9.6 - Prob. 4OECh. 9.6 - Prob. 5OECh. 9.6 - Prob. 6OECh. 9.6 - Prob. 7OECh. 9.6 - Prob. 8OECh. 9.6 - Prob. 9OECh. 9.6 - Prob. 10OECh. 9.6 - Prob. 11OECh. 9.6 - Prob. 12OECh. 9.6 - Prob. 13OECh. 9.6 - Prob. 14OECh. 9.6 - Prob. 15OECh. 9.6 - Prob. 16OECh. 9.6 - Prob. 1PCh. 9.6 - Prob. 2PCh. 9.6 - Prob. 3PCh. 9.6 - Prob. 4PCh. 9.6 - Prob. 5PCh. 9.6 - Prob. 6PCh. 9.6 - Prob. 7PCh. 9.6 - Prob. 8PCh. 9.6 - Prob. 9PCh. 9.6 - Prob. 10PCh. 9.6 - Prob. 11PCh. 9.6 - Prob. 12PCh. 9.6 - Prob. 13PCh. 9.6 - Prob. 14PCh. 9.6 - Prob. 15PCh. 9.6 - Prob. 16PCh. 9.6 - Prob. 17PCh. 9.6 - Prob. 18PCh. 9.6 - Prob. 19PCh. 9.6 - Prob. 20PCh. 9.6 - Prob. 21PCh. 9.6 - Prob. 22PCh. 9.6 - Prob. 23PCh. 9.6 - Prob. 1MRECh. 9.6 - Prob. 2MRECh. 9.6 - Prob. 3MRECh. 9.6 - Prob. 4MRECh. 9.6 - Prob. 5MRECh. 9.6 - Prob. 6MRECh. 9.6 - Prob. 7MRECh. 9.6 - Prob. 8MRECh. 9.6 - Prob. 9MRECh. 9.7 - Prob. 1OECh. 9.7 - Prob. 2OECh. 9.7 - Prob. 3OECh. 9.7 - Prob. 4OECh. 9.7 - Prob. 5OECh. 9.7 - Prob. 6OECh. 9.7 - Prob. 7OECh. 9.7 - Prob. 8OECh. 9.7 - Prob. 9OECh. 9.7 - Prob. 10OECh. 9.7 - Prob. 11OECh. 9.7 - Prob. 12OECh. 9.7 - Prob. 13OECh. 9.7 - Prob. 14OECh. 9.7 - Prob. 15OECh. 9.7 - Prob. 16OECh. 9.7 - Prob. 17OECh. 9.7 - Prob. 18OECh. 9.7 - Prob. 19OECh. 9.7 - Prob. 20OECh. 9.7 - Prob. 21OECh. 9.7 - Prob. 22OECh. 9.7 - Prob. 1PCh. 9.7 - Prob. 2PCh. 9.7 - Prob. 3PCh. 9.7 - Prob. 4PCh. 9.7 - Prob. 5PCh. 9.7 - Prob. 6PCh. 9.7 - Prob. 7PCh. 9.7 - Prob. 8PCh. 9.7 - Prob. 9PCh. 9.7 - Prob. 10PCh. 9.7 - Prob. 11PCh. 9.7 - Prob. 12PCh. 9.7 - Prob. 13PCh. 9.7 - Prob. 14PCh. 9.7 - Prob. 15PCh. 9.7 - Prob. 16PCh. 9.7 - Prob. 17PCh. 9.7 - Prob. 18PCh. 9.7 - Prob. 19PCh. 9.7 - Prob. 20PCh. 9.7 - Prob. 21PCh. 9.7 - Prob. 22PCh. 9.7 - Prob. 23PCh. 9.7 - Prob. 24PCh. 9.7 - Prob. 25PCh. 9.7 - Prob. 26PCh. 9.7 - Prob. 27PCh. 9.7 - Prob. 28PCh. 9.7 - Prob. 29PCh. 9.7 - Prob. 30PCh. 9.7 - Prob. 31PCh. 9.7 - Prob. 32PCh. 9.7 - Prob. 33PCh. 9.7 - Prob. 34PCh. 9.7 - Prob. 1MRECh. 9.7 - Prob. 2MRECh. 9.7 - Prob. 3MRECh. 9.7 - Prob. 4MRECh. 9.7 - Prob. 5MRECh. 9.7 - Prob. 6MRECh. 9.7 - Prob. 7MRECh. 9.7 - Prob. 8MRECh. 9.7 - Prob. 9MRECh. 9.7 - Prob. 10MRECh. 9.7 - Prob. 11MRECh. 9.7 - Prob. 12MRECh. 9.7 - Prob. 1STCh. 9.7 - Prob. 2STCh. 9.7 - Prob. 3STCh. 9.7 - Prob. 4STCh. 9 - Prob. 1CRCh. 9 - Prob. 2CRCh. 9 - Prob. 3CRCh. 9 - Prob. 4CRCh. 9 - Prob. 5CRCh. 9 - Prob. 6CRCh. 9 - Prob. 7CRCh. 9 - Prob. 8CRCh. 9 - Prob. 9CRCh. 9 - Prob. 1CTCh. 9 - Prob. 2CTCh. 9 - Prob. 3CTCh. 9 - Prob. 4CTCh. 9 - Prob. 5CTCh. 9 - Prob. 6CTCh. 9 - Prob. 7CTCh. 9 - Prob. 8CTCh. 9 - Prob. 9CTCh. 9 - Prob. 10CTCh. 9 - Prob. 11CTCh. 9 - Prob. 12CTCh. 9 - Prob. 13CTCh. 9 - Prob. 14CTCh. 9 - Prob. 1CLRCh. 9 - Prob. 2CLRCh. 9 - Prob. 3CLRCh. 9 - Prob. 4CLRCh. 9 - Prob. 5CLRCh. 9 - Prob. 6CLRCh. 9 - Prob. 7CLRCh. 9 - Prob. 8CLRCh. 9 - Prob. 9CLRCh. 9 - Prob. 10CLRCh. 9 - Prob. 11CLRCh. 9 - Prob. 12CLRCh. 9 - Prob. 13CLRCh. 9 - Prob. 14CLRCh. 9 - Prob. 15CLRCh. 9 - Prob. 16CLRCh. 9 - Prob. 17CLRCh. 9 - Prob. 18CLRCh. 9 - Prob. 19CLRCh. 9 - Prob. 20CLRCh. 9 - Prob. 21CLRCh. 9 - Prob. 22CLRCh. 9 - Prob. 23CLRCh. 9 - Prob. 24CLRCh. 9 - Prob. 25CLRCh. 9 - Prob. 26CLRCh. 9 - Prob. 27CLRCh. 9 - Prob. 28CLRCh. 9 - Prob. 29CLRCh. 9 - Prob. 30CLRCh. 9 - Prob. 31CLRCh. 9 - Prob. 1MSCh. 9 - Prob. 2MSCh. 9 - Prob. 3MSCh. 9 - Prob. 4MSCh. 9 - Prob. 5MSCh. 9 - Prob. 6MSCh. 9 - Prob. 7MSCh. 9 - Prob. 8MSCh. 9 - Prob. 9MSCh. 9 - Prob. 10MSCh. 9 - Prob. 11MSCh. 9 - Prob. 12MSCh. 9 - Prob. 13MSCh. 9 - Prob. 14MSCh. 9 - Prob. 15MSCh. 9 - Prob. 16MSCh. 9 - Prob. 17MSCh. 9 - Prob. 18MSCh. 9 - Prob. 19MSCh. 9 - Prob. 20MSCh. 9 - Prob. 21MSCh. 9 - Prob. 22MSCh. 9 - Prob. 23MSCh. 9 - Prob. 24MSCh. 9 - Prob. 25MSCh. 9 - Prob. 26MSCh. 9 - Prob. 27MSCh. 9 - Prob. 28MSCh. 9 - Prob. 29MSCh. 9 - Prob. 30MSCh. 9 - Prob. 1MPSCh. 9 - Prob. 2MPSCh. 9 - Prob. 3MPSCh. 9 - Prob. 4MPSCh. 9 - Prob. 5MPSCh. 9 - Prob. 6MPSCh. 9 - Prob. 7MPSCh. 9 - Prob. 8MPSCh. 9 - Prob. 9MPSCh. 9 - Prob. 10MPSCh. 9 - Prob. 11MPSCh. 9 - Prob. 12MPSCh. 9 - Prob. 13MPSCh. 9 - Prob. 14MPS
Knowledge Booster
Background pattern image
Algebra
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, algebra and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Text book image
Algebra and Trigonometry (6th Edition)
Algebra
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:PEARSON
Text book image
Contemporary Abstract Algebra
Algebra
ISBN:9781305657960
Author:Joseph Gallian
Publisher:Cengage Learning
Text book image
Linear Algebra: A Modern Introduction
Algebra
ISBN:9781285463247
Author:David Poole
Publisher:Cengage Learning
Text book image
Algebra And Trigonometry (11th Edition)
Algebra
ISBN:9780135163078
Author:Michael Sullivan
Publisher:PEARSON
Text book image
Introduction to Linear Algebra, Fifth Edition
Algebra
ISBN:9780980232776
Author:Gilbert Strang
Publisher:Wellesley-Cambridge Press
Text book image
College Algebra (Collegiate Math)
Algebra
ISBN:9780077836344
Author:Julie Miller, Donna Gerken
Publisher:McGraw-Hill Education
Use of ALGEBRA in REAL LIFE; Author: Fast and Easy Maths !;https://www.youtube.com/watch?v=9_PbWFpvkDc;License: Standard YouTube License, CC-BY
Compound Interest Formula Explained, Investment, Monthly & Continuously, Word Problems, Algebra; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=P182Abv3fOk;License: Standard YouTube License, CC-BY
Applications of Algebra (Digit, Age, Work, Clock, Mixture and Rate Problems); Author: EngineerProf PH;https://www.youtube.com/watch?v=Y8aJ_wYCS2g;License: Standard YouTube License, CC-BY