Results 1 to 8 of 8

Math Help - Help with radical expression!!!

  1. #1
    Newbie
    Joined
    Sep 2008
    Posts
    3

    Help with radical expression!!!

    I need help with this problem:

    (sqroot 5)*(sqroot .0025)/(sqroot .0009)
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member Matt Westwood's Avatar
    Joined
    Jul 2008
    From
    Reading, UK
    Posts
    807
    Thanks
    27
    \frac {\sqrt 5 \sqrt{.0025}}{\sqrt {.0009}}

    = \sqrt {\frac {5 \times .0025}{.0009}}

    = \sqrt {\frac {5 \times 25}{9}}

    = \sqrt 5 {\frac {5}{3}}

    ... I think.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Banned
    Joined
    Aug 2008
    Posts
    530
    Quote Originally Posted by cecij22 View Post
    I need help with this problem:

    (sqroot 5)*(sqroot .0025)/(sqroot .0009)
    =\frac{\sqrt{5}\times \sqrt{0.0025}}{\sqrt{0.0009}}

    =\frac{\sqrt{5}\times 0.05}{0.03}

    =\frac{\sqrt{5}\times 5}{3}

    =\frac{5\sqrt{5}}{3}
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Newbie
    Joined
    Sep 2008
    Posts
    3
    Wouldn't the \sqrt{5} also get multiplied by 100 when you multiply to get rid of the decimal points?
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Super Member 11rdc11's Avatar
    Joined
    Jul 2007
    From
    New Orleans
    Posts
    894
    yes
    Follow Math Help Forum on Facebook and Google+

  6. #6
    Super Member Matt Westwood's Avatar
    Joined
    Jul 2008
    From
    Reading, UK
    Posts
    807
    Thanks
    27
    No

    \frac {\sqrt 5 \times 0.05}{0.03} = \frac {\sqrt 5 \times 5 \times 0.01}{3 \times 0.01}

    You only got one 0.01 on top and bottom to cancel with each other.
    Follow Math Help Forum on Facebook and Google+

  7. #7
    Super Member 11rdc11's Avatar
    Joined
    Jul 2007
    From
    New Orleans
    Posts
    894
    oops thanks for pointing that out
    Follow Math Help Forum on Facebook and Google+

  8. #8
    Newbie
    Joined
    Sep 2008
    Posts
    3
    Ohhhh...I get it. Thank you everyone for all your help.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Radical Expression
    Posted in the Algebra Forum
    Replies: 2
    Last Post: January 9th 2011, 10:06 AM
  2. Confused - Radical Expression
    Posted in the Algebra Forum
    Replies: 5
    Last Post: May 16th 2010, 03:08 PM
  3. radical expression
    Posted in the Algebra Forum
    Replies: 1
    Last Post: May 10th 2010, 07:27 PM
  4. Radical Expression
    Posted in the Algebra Forum
    Replies: 6
    Last Post: April 29th 2010, 06:21 PM
  5. Divide radical expression
    Posted in the Algebra Forum
    Replies: 2
    Last Post: April 23rd 2008, 04:18 PM

Search Tags


/mathhelpforum @mathhelpforum