Results 1 to 4 of 4

Math Help - Power Company

  1. #1
    MHF Contributor
    Joined
    Jul 2008
    From
    NYC
    Posts
    1,489

    Power Company

    A power company needs to string a power line between 2 buildings. One building is located on the west side of a river, and the other building is located 3000 ft downriver on the opposite side of the river. The river is 500 ft wide. The power line must run underground on the shore and underwater across the river. The cost to run the line underwater $50 per foot, and the cost to run the line underground is $40 per foot.

    A) How much does it cost to run 500 feet of wire underground and rest underwater?
    B) How much does it cost to run 1000 feet of wire underground and rest underwater?
    C) Write an equation/ function for the total cost to run the power line between the 2 buildings in terms of the amount of wire run underground.
    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 magentarita View Post
    A power company needs to string a power line between 2 buildings. One building is located on the west side of a river, and the other building is located 3000 ft downriver on the opposite side of the river. The river is 500 ft wide. The power line must run underground on the shore and underwater across the river. The cost to run the line underwater $50 per foot, and the cost to run the line underground is $40 per foot.

    A) How much does it cost to run 500 feet of wire underground and rest underwater?
    B) How much does it cost to run 1000 feet of wire underground and rest underwater?
    C) Write an equation/ function for the total cost to run the power line between the 2 buildings in terms of the amount of wire run underground.
    did you draw a diagram?

    try it and see if you can see where to go. it involves triangles
    Follow Math Help Forum on Facebook and Google+

  3. #3
    MHF Contributor
    Joined
    Jul 2008
    From
    NYC
    Posts
    1,489

    ok...

    Quote Originally Posted by Jhevon View Post
    did you draw a diagram?

    try it and see if you can see where to go. it involves triangles
    Can you draw a diagram for me? I might be able to answer atleast part a alone.
    Follow Math Help Forum on Facebook and Google+

  4. #4
    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 magentarita View Post
    Can you draw a diagram for me? I might be able to answer atleast part a alone.
    attached you will find the base diagram (which is just a diagram illustrating the positions of the buildings without considering the power lines) and also the diagram for part (a). i filled in the power lines. take note of the triangle ABC and ABD. note further that ABD is a right-triangle.

    i leave it to you to draw the diagram for part (b) and finish the problem if you can
    Attached Thumbnails Attached Thumbnails Power Company-base-diagram.png   Power Company-diagram-part-.png  
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. A bus company...
    Posted in the Calculus Forum
    Replies: 2
    Last Post: November 18th 2009, 01:21 PM
  2. A packaging company...
    Posted in the Calculus Forum
    Replies: 3
    Last Post: November 12th 2009, 04:13 PM
  3. company problem
    Posted in the Business Math Forum
    Replies: 1
    Last Post: May 27th 2008, 06:29 AM
  4. company+ probability
    Posted in the Statistics Forum
    Replies: 1
    Last Post: June 1st 2007, 10:22 AM
  5. Replies: 2
    Last Post: August 28th 2006, 03:19 PM

Search Tags


/mathhelpforum @mathhelpforum