Discover Questions

A ball is thrown upward with an initial velocity of 14 m/s. At what time does the ball reach the high point in its flight? g=10 m/s^2? How do I answer this math problem? 300mi/20sec = ?mi/1 minute Thanks!? Solve using the elimination method.
8x−y=16
4x+y=20
(FIND THE ORDERED PAIR)? Two planes The first flies 150 km/h at 190 degrees. the second flies 210 km/h at 230 degrees. after s hours how far apart are the planes? Solve by the elimination method.
9x−y=35 , x+8y=12 (FIND THE ORDERED PAIR)?