Results 1 to 2 of 2

Math Help - solving equations

  1. #1
    Newbie
    Joined
    Aug 2007
    Posts
    6

    solving equations

    cant get my head round equations

    eg 8-4(x-1)=2+3x

    how do I go about it
    how to find radius of base of cone 250cm3, ht 20cm.cant get brain in gear
    Follow Math Help Forum on Facebook and Google+

  2. #2
    is up to his old tricks again! Jhevon's Avatar
    Joined
    Feb 2007
    From
    New York, USA
    Posts
    11,663
    Thanks
    3
    Quote Originally Posted by bobbie bruce View Post
    cant get my head round equations

    eg 8-4(x-1)=2+3x
    do you know how to expand brackets? expand - 4(x - 1) then try to get the x on one side of the equation

    how to find radius of base of cone 250cm3, ht 20cm.cant get brain in gear
    recall that:

    V = \frac {1}{3} \pi r^2 h

    you are given V = 250, h = 20 so just plug those in and solve for r


    try them. if you have problems, say so
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 6
    Last Post: November 30th 2011, 02:41 AM
  2. Solving two equations
    Posted in the Algebra Forum
    Replies: 7
    Last Post: November 21st 2011, 03:55 PM
  3. Solving equations
    Posted in the Algebra Forum
    Replies: 29
    Last Post: November 18th 2011, 07:05 AM
  4. Solving these equations...
    Posted in the Differential Equations Forum
    Replies: 1
    Last Post: April 27th 2009, 06:06 AM
  5. solving equations
    Posted in the Algebra Forum
    Replies: 3
    Last Post: May 16th 2006, 04:58 PM

Search Tags


/mathhelpforum @mathhelpforum