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anonymous

  • one year ago

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?

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  1. anonymous
    • one year ago
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    PLEASE HELP

  2. calculusxy
    • one year ago
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    So is the formula: S = 25L

  3. anonymous
    • one year ago
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    It's s=2sqrt5l @calculusxy

  4. calculusxy
    • one year ago
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    \[S = 2\sqrt{5l}\]

  5. calculusxy
    • one year ago
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    Is that correct?

  6. anonymous
    • one year ago
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    Yes @calculusky

  7. calculusxy
    • one year ago
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    Okay!

  8. calculusxy
    • one year ago
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    You know that the skid mark left is 105 feet, and you can replace that for L. Thus, what you have here is now: \[S = 2\sqrt{5(105)}\]

  9. calculusxy
    • one year ago
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    Did you solve for it?

  10. anonymous
    • one year ago
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    I got 2sqrt525 @calculusxy

  11. anonymous
    • one year ago
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    I'm not good at solving square roots

  12. anonymous
    • one year ago
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    Please help I need this now :( @calculusxy

  13. calculusxy
    • one year ago
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    About 45.8

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