Results 1 to 2 of 2

Math Help - Transforming Formulas

  1. #1
    Newbie
    Joined
    Feb 2007
    Posts
    4

    Transforming Formulas

    I need help with these problems and my book doesnt explain it very well.

    Solve the formula I = Prt for P



    Solve the formula A = P(1+rt) for r



    Solve x + yr = z for z
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Grand Panjandrum
    Joined
    Nov 2005
    From
    someplace
    Posts
    14,972
    Thanks
    4
    Quote Originally Posted by fyisvd View Post
    I need help with these problems and my book doesnt explain it very well.

    Solve the formula I = Prt for P

    Divide both sides by rt (as two things that are equal are still equal when
    divided by the same thing)

    I/(rt)=P,

    P=1/(rt)

    Solve the formula A = P(1+rt) for r
    dicide both sides by P:

    A/P=1+rt.

    Subtract 1 form both sides (as two things that are equal are still equal when
    the same thing is added or subracted from both)

    A/P - 1 =rt

    Divide both sides bt t:

    (A/P - 1)/t =r,

    or:

    r = (A/P - 1)/t,

    Solve x + yr = z for z
    z= x + yr

    (if something is equal to a thing, then the thing is equal to that something)

    RonL
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. transforming formulas
    Posted in the Calculus Forum
    Replies: 10
    Last Post: October 8th 2011, 11:27 AM
  2. Need help Transforming Formulas
    Posted in the Algebra Forum
    Replies: 1
    Last Post: November 5th 2009, 05:53 AM
  3. Need urgent help with Transforming Formulas
    Posted in the Algebra Forum
    Replies: 3
    Last Post: June 1st 2008, 07:20 AM
  4. [SOLVED] Transforming Formulas
    Posted in the Algebra Forum
    Replies: 1
    Last Post: March 4th 2008, 03:48 PM
  5. Transforming Formulas
    Posted in the Algebra Forum
    Replies: 2
    Last Post: February 7th 2008, 03:38 PM

Search Tags


/mathhelpforum @mathhelpforum