The quotient of three less than a number and six is nine

The track team ran a mile and a quarter during their practice how many kilometers did her team runs?

Given: m zade = 60° and m2cdf = (3x + 15) prove: x = 15

Captain umaima has a ship, the h.m.s. khan. the ship is two furlongs from the dread pirate nadia and her merciless band of thieves. the captain has probability 3/7 of hitting the pirate ship. the pirate only has one good eye, so she hits the captain's ship with probability 2/5. if both fire their cannons at the same time, what is the probability that the captain hits the pirate ship, but the pirate misses.