Page 3 of 3 FirstFirst 123
Results 31 to 33 of 33

Math Help - system of linear equations

  1. #31
    dan
    dan is offline
    Member dan's Avatar
    Joined
    Jun 2006
    From
    nebraska usa
    Posts
    113
    Quote Originally Posted by danielwu
    hi there i have problem with this word problems

    Set up appropriate systems of two linear equations in two unknowns and then solve the systems by determinants. all numbers are accurate to at least two significant digits.


    (A) A shipment of 320 cell phones and radar detectors was destroyed due to a truck accident. on the insurance claim, the shipper stated that each phone was worth $110, each detector was worth $160, and their total value was $40700. how many of each were in the shipment?

    (1) $110 + $160 = $40700<--------is the first equation right??
    (2) ??????????????????????


    was wondering is there a way to master these word problem?
    let the number of phones be x and the number of decters  y
    then
    x + y =320
    110x+160y =40700

    can you get it from there??
    if not let me know..
    dan
    Follow Math Help Forum on Facebook and Google+

  2. #32
    Junior Member
    Joined
    Aug 2006
    Posts
    38
    okay i found it. thanks alot
    Last edited by danielwu; September 4th 2006 at 11:52 PM.
    Follow Math Help Forum on Facebook and Google+

  3. #33
    Junior Member
    Joined
    Aug 2006
    Posts
    38

    another word problem

    Solve the given problems by determinant. Set up appropriate systems of equations. all numbers are accurate to at least two significant digits

    A person spent 1.10h in a car going to an airport, 1.95h flying in a jet, and 0.520h in a taxi to reach the final destination. the jet's speed averaged 12.0 times that of the car, which averaged 15.0 km/h more than the taxi. what was the average speed of each if the trip covered 1140km?
    Follow Math Help Forum on Facebook and Google+

Page 3 of 3 FirstFirst 123

Similar Math Help Forum Discussions

  1. System of linear equations.
    Posted in the Algebra Forum
    Replies: 6
    Last Post: October 29th 2010, 03:48 PM
  2. Non-linear system of two equations
    Posted in the Algebra Forum
    Replies: 5
    Last Post: October 3rd 2010, 01:05 PM
  3. System of linear equations.
    Posted in the Algebra Forum
    Replies: 5
    Last Post: August 9th 2010, 11:03 PM
  4. Replies: 2
    Last Post: April 20th 2010, 03:26 PM
  5. System of non-linear equations
    Posted in the Algebra Forum
    Replies: 4
    Last Post: May 4th 2009, 08:18 PM

Search Tags


/mathhelpforum @mathhelpforum