help with this math problem!?

so far i know the answer is not C.

Attachment image

10 Answers

Relevance
  • TomV
    Lv 7
    8 months ago
    Favourite answer

    5/√x = 5x^(-1/2)

  • Pope
    Lv 7
    8 months ago

    Since there is no C among the choices, your deduction must be correct, but I would not expect any partial credit for that effort.

  • 8 months ago

    The expression which is equivalent to 5/√x:

    Answer choice:

    A) 5x^(-1/2) 

  • ?
    Lv 7
    8 months ago

    See explanation below.

    Attachment image
  • What do you think of the answers? You can sign in to give your opinion on the answer.
  • Anonymous
    8 months ago

    Here is a clue

    the answer is the first one.

  • Como
    Lv 7
    8 months ago

    5 / √x   =  5 x^(-1/2)

  • 8 months ago

    x^(½) = √x

    1/(√x) = x^(-½)

    So

    5/(√x) = ?

    You should be able to finish it off now.

  • 8 months ago

    Here's the "clue"

    1/x^a = x^(-a)

  • rotchm
    Lv 7
    8 months ago

    Hint: Use a value: let x = 25. Conclusions?

  • 8 months ago

    the first.

    1/√x = x^(–1/2)

Still have questions? Get answers by asking now.