Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Hard math question

  1. Jun 16, 2005 #1

    DB

    User Avatar

    in my opinion, i find this question really hard.

    -the volume of a can of concentrated orange juice is represented by the following expression:
    [tex](8x^3-54x+54)\pi[/tex]cm^3
    the juice is prepared by emptying the concentrate into a large container and by adding 3 cans of the same volume of water. after a good stir, the juice is poured into glasses measuring 9 cm in height and whose radius is (2x-3) cm. Use a simplified algebraic expression to represent the number of glasses that can be filled up to 1 cm from the rim.

    i've drawn my diagrams i just don't know where to start. any help would be apreciated...
    thanks in advance
     
  2. jcsd
  3. Jun 16, 2005 #2
    The volume of the large container is 4*volume of oj concentrate

    you would then divide that by the volume of the glass (-1 cm of height)
     
  4. Jun 16, 2005 #3

    DB

    User Avatar

    o i see wat the question ment when it said "3 cans of water of the same volume" AS THE CONCENTRATE, its really badly written.... thanks tho
     
  5. Jun 16, 2005 #4
    btw, you won't find a constant number, you will find a function of x
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook