anonymous
  • anonymous
The formula r=2sqrt(5L) can be used to approximate the speed r, in miles per hour, of a car that has left skid marks of length L, in feet. How far will a car skid at 20 mph?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
\[20 = 2 \sqrt{5L}\]\[10 = \sqrt {5L}\]\[10^{2} = 5L\]\[L = 100/5 = 20\]
anonymous
  • anonymous
So how many feet is it? 100/5?
anonymous
  • anonymous
transform 20 mi into feet 20 mi = 105 600 feet

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anonymous
  • anonymous
okay, what do i do next?
anonymous
  • anonymous
that's yur answer..
anonymous
  • anonymous
105 600 feet is my answer?
anonymous
  • anonymous
a car that has left skid marks of length L, in feet. How far will a car skid at 20 mph? -> 20 mi = 105 600 feet
anonymous
  • anonymous
Ok, thank you.
anonymous
  • anonymous
np
anonymous
  • anonymous
what about at 80mph

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