anonymous
  • anonymous
A car travels 100 meters in 5 seconds. What is the speed of the car? speed = distance over time; 1 mile = 1609 meters
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
i need a walk through
Michele_Laino
  • Michele_Laino
by definition, the speed of the car is: \[\Large speed = \frac{{{\text{distance}}}}{{{\text{time}}}}\]
anonymous
  • anonymous
100 miles is distance and

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More answers

anonymous
  • anonymous
5 secs is time
anonymous
  • anonymous
So how much is 100m in miles?? 100/1609 right? :D And how much is 5 seconds in hours? 5/3600 right? :D So miles/hour = \[\frac{ 100 }{ 1609 }*\frac{ 3600 }{ 5 }\] 44.7 miles
campbell_st
  • campbell_st
if you multiply both values by 12 you will know how many metres in 1 minute this is because 12 x 5 = 60 then multiply the answer by 60 to find how many metres in 1 hour does that make sense..?
Michele_Laino
  • Michele_Laino
\[\Large speed = \frac{{{\text{distance}}}}{{{\text{time}}}} = \frac{{100}}{5} = ...miles/\sec \]
anonymous
  • anonymous
20
Michele_Laino
  • Michele_Laino
correct! it is 20 miles/seconds
anonymous
  • anonymous
????
Michele_Laino
  • Michele_Laino
we can change unit of measure, namely we can measure that speed in Km/hour
anonymous
  • anonymous
so 20 is the right answer not what they said?
Michele_Laino
  • Michele_Laino
20 miles /seconds, is your speed, and as you can see , the corresponding unit of measure is miles/seconds
Michele_Laino
  • Michele_Laino
nevertheless, if we want to change unit of measure, of course, we get a different answer
anonymous
  • anonymous
20
anonymous
  • anonymous
so thats all i had to do
anonymous
  • anonymous
@Buttercup214 its 20
Michele_Laino
  • Michele_Laino
yes! if you want the speed in miles/seconds, that is all!
anonymous
  • anonymous
oh sorry i forgot to say thank you.

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