can u please help me! please

Most popular questions and responses by can u please help me! please
  1. algebra!!

    How many ordered pairs of integers (a,b) are there such that 1/a+1/b=1/200?

    asked on February 18, 2013
  2. MATHS!

    While training for a triathlon, Trina will first swim, then cycle and finally run. She will swim either 200, 300, 400 or 500 metres, followed by cycling 5, 9, or 13 kilometres, and finally running either 2 or 3 kilometres. How many different possible

    asked on February 19, 2013
  3. physics.....

    Two soccer players on a breakaway start from midfield and run straight down the field with a separation of d=5 m and with the same velocity v=7 m/s. The last defensive player of the other team approaches the player who has the ball, so that person decides

    asked on February 19, 2013
  4. physics

    You and a friend are going to a river, where they have a rope swing. Your friend, who has a mass of 60 kg, hops on the end of the rope. You tug horizontally on your friend with a force of 300 N, pulling them back until you can't move them any more. Then

    asked on February 19, 2013
  5. maths

    terrorists are trying to take over the world. They know the password to the weapon is 5 digits long and contains either 0 or 1, and either 2 or 3, and either 4 or 5, and either 6 or 7, and either 8 or 9. If the robots can enter 5 passwords per second, how

    asked on February 18, 2013
  6. physics

    Collision of charged particles}} A proton moves in vacuum and enters a region where there's another proton at rest. The protons interact and the angle between their velocities is measured when they are far away from each other. What is the most likely

    asked on February 18, 2013