I just need to solve 2sqrt5(105) please

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- anonymous

I just need to solve 2sqrt5(105) please

- jamiebookeater

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- anonymous

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- anonymous

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## More answers

- anonymous

- Astrophysics

\[2\sqrt{5(105)}?\]

- anonymous

Yes @Astrophysics

- Astrophysics

Ok so what have you tried?

- anonymous

I don't know how to solve big square roots really. But I need this now :( @Astrophysics

- Astrophysics

\[2\sqrt{525}\] maybe that's easier, just keep simplifying that

- anonymous

Okay I got 10 times sqrt21 @Astrophysics

- Astrophysics

Yes! Exactly

- anonymous

That's the answer ?

- Astrophysics

Yup :)

- 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

- Astrophysics

What is S25L

- anonymous

S=2sqrt5l

- Astrophysics

Oooh \[S = 2\sqrt{5L}\]

- anonymous

Yes

- anonymous

I need this answer in the next 3 minutes :(

- Astrophysics

So S is your speed and L is your length this is exactly the same as your problem above

- Astrophysics

plug L = 105

- Astrophysics

I guess you don't have to convert any units either ft into miles or what ever does look like it

- anonymous

so that's the answer 10 times sqrt ?

- anonymous

Sqrt21 ? So there is no rounding to the nearest mph

- Astrophysics

Then put it in decimals if it's asking in that

- anonymous

What would it be

- Astrophysics

Use a calculator..

- anonymous

One minute left :(

- Astrophysics

I got 46

- anonymous

I did too! Thanks fam !

- Astrophysics

Yw

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