Finding average speed or rate | Ratios, proportions, units, and rates | Pre-Algebra | Khan Academy скачать в хорошем качестве

Finding average speed or rate | Ratios, proportions, units, and rates | Pre-Algebra | Khan Academy

Using the formula for finding distance we can determine Usian Bolt's average speed, or rate, when he broke the world record in 2009 in the 100m. Watch. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-... Watch the next lesson: https://www.khanacademy.org/math/pre-... Missed the previous lesson? https://www.khanacademy.org/math/pre-... Pre-Algebra on Khan Academy: No way, this isn't your run of the mill arithmetic. This is Pre-algebra. You're about to play with the professionals. Think of pre-algebra as a runway. You're the airplane and algebra is your sunny vacation destination. Without the runway you're not going anywhere. Seriously, the foundation for all higher mathematics is laid with many of the concepts that we will introduce to you here: negative numbers, absolute value, factors, multiples, decimals, and fractions to name a few. So buckle up and move your seat into the upright position. We're about to take off! About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to KhanAcademy’s Pre-Algebra channel::    / Канал   Subscribe to KhanAcademy: https://www.youtube.com/subscription_...