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katlin95

  • one year ago

f(x)=sqrt 2x-5 find f (27)

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  1. AravindG
    • one year ago
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    substitute x with 27 in f(x) .

  2. katlin95
    • one year ago
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    27

  3. AravindG
    • one year ago
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    try again?

  4. some_someone
    • one year ago
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    f(27)=sqr root (2(27)-5) Multiply 2 by the 27 inside the parentheses. f(27)=sqr root (2*27-5) Multiply 2 by 27 to get 54. f(27)=sqr root (54-5) Subtract 5 from 54 to get 49. f(27)=sqr root (49) Pull all perfect square roots out from under the radical. In this case, remove the 7 because it is a perfect square. f(27)=7

  5. katlin95
    • one year ago
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    @AravindG is 7 correct?

  6. AravindG
    • one year ago
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    yep :)

  7. katlin95
    • one year ago
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    yay!

  8. AravindG
    • one year ago
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    @some_someone please do not give direct worked out answers like that .It is against Openstudy COC .Refer http://openstudy.com/code-of-conduct .Instead help the asker get to the solution ,making them participate in answering process.Thank you

  9. some_someone
    • one year ago
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    Ok thank you @AravindG I will follow that now :)

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