anonymous
  • anonymous
I have a test tomorrow and its over rate time and distance. If someone could just explain one problem to me I might get the rest! The question is in the comments! Please help!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
Two jets leave Denver at 9:00 am one flying east at a speed 50 km/h greater than the other which is traveling west. at 11:00 am the planes are 2500 km apart. find their speeds. (I need the rate x time = distance chart as well as the answer)
anonymous
  • anonymous
you need a variable for the speed how about R for "rate"?
anonymous
  • anonymous
i should be more precise' how about \(R\) for the rate of the slower plane

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anonymous
  • anonymous
the faster plane will then have a speed of \(R+50\) because it is going 50 mph faster
anonymous
  • anonymous
in two hours they are 2500 miles apart since distance is rate times time the slower plane travelled \(2R\) miles and the faster one \(2(R+50)=2R+00\) miles
anonymous
  • anonymous
since the total is \(2500\) you know \[2R+2R+100=2500\] and you can solve that for \(R\)
anonymous
  • anonymous
Wait where did you get the 2 from??
anonymous
  • anonymous
two hours
anonymous
  • anonymous
from 9 to 11 is two hours, so the time is \(2\)
anonymous
  • anonymous
go R miles per hour for two hours distance is \(2R\)
anonymous
  • anonymous
Oh I see! so |dw:1446692215114:dw| is that correct?

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