Answered

IDNLearn.com is the place where your questions are met with thoughtful and precise answers. Join our knowledgeable community to find the answers you need for any topic or issue.

Greene ran the 100-meter dash in 9.79 seconds. What was his speed in kilometers per hour (round to the nearest kilometer)?
Please explain the work behind the solution

Sagot :

Luanaidn
[tex]1m \ \ is\ \ \frac{1}{1000}km\\ 100m\ \ is\ \ \frac{1}{10}km\\ 1s\ \ is\ \ \frac{1}{3600}h\\ 9,79s\ \ is\ \ \frac{9,79}{3600}h\\\\ \frac{100meters}{9,79\ seconds}=\frac{100}{97}*\frac{\frac{1}{10}}{\frac{9,79}{3600}}=\frac{100}{97}*\frac{1}{10}*\frac{3600}{9,79}=\frac{360000}{970*9,79}=\\ \frac{360000}{9496,3}\approx\boxed{37,9\frac{km}{h}}[/tex]
Thank you for joining our conversation. Don't hesitate to return anytime to find answers to your questions. Let's continue sharing knowledge and experiences! IDNLearn.com has the solutions to your questions. Thanks for stopping by, and come back for more insightful information.