anonymous
  • anonymous
I just need to solve 2sqrt5(105) please
Mathematics
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anonymous
  • anonymous
I just need to solve 2sqrt5(105) please
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
anonymous
  • anonymous
anonymous
  • anonymous

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anonymous
  • anonymous
Astrophysics
  • Astrophysics
\[2\sqrt{5(105)}?\]
anonymous
  • anonymous
Astrophysics
  • Astrophysics
Ok so what have you tried?
anonymous
  • anonymous
I don't know how to solve big square roots really. But I need this now :( @Astrophysics
Astrophysics
  • Astrophysics
\[2\sqrt{525}\] maybe that's easier, just keep simplifying that
anonymous
  • anonymous
Okay I got 10 times sqrt21 @Astrophysics
Astrophysics
  • Astrophysics
Yes! Exactly
anonymous
  • anonymous
That's the answer ?
Astrophysics
  • Astrophysics
Yup :)
anonymous
  • anonymous
Okay well I'm solving this problem LAW ENFORCEMENT:  A police accident investigator can use the formula S25L to estimate the speed s of a car in miles per hour based on the length l in feet of the skid marks it left.  How fast was a car traveling that left skid marks 105 feet long? And I have to round the answer to the nearest mph @ Astrophysics
anonymous
  • anonymous
Astrophysics
  • Astrophysics
What is S25L
anonymous
  • anonymous
S=2sqrt5l
Astrophysics
  • Astrophysics
Oooh \[S = 2\sqrt{5L}\]
anonymous
  • anonymous
Yes
anonymous
  • anonymous
I need this answer in the next 3 minutes :(
Astrophysics
  • Astrophysics
So S is your speed and L is your length this is exactly the same as your problem above
Astrophysics
  • Astrophysics
plug L = 105
Astrophysics
  • Astrophysics
I guess you don't have to convert any units either ft into miles or what ever does look like it
anonymous
  • anonymous
so that's the answer 10 times sqrt ?
anonymous
  • anonymous
Sqrt21 ? So there is no rounding to the nearest mph
Astrophysics
  • Astrophysics
Then put it in decimals if it's asking in that
anonymous
  • anonymous
What would it be
Astrophysics
  • Astrophysics
Use a calculator..
anonymous
  • anonymous
One minute left :(
Astrophysics
  • Astrophysics
I got 46
anonymous
  • anonymous
I did too! Thanks fam !
Astrophysics
  • Astrophysics
Yw

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