To successfully escape a planet's gravity, a space ship must achieve escape velocity, which for earth is 11.2 km/s or 25,054 miles per hour. if a ship reaches this speed and maintains it, then neglecting the need to slow down prior to landing, how long would it take the ship to reach the moon? use the actual distance to the moon of 233,815 miles and give your answer in hours.

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 20 = x a. 5, 4 b. -5, -4 c. -5, 4 d. 5, -4

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?

Suppose you just purchased a digital music player and have put 8 tracks on it. after listening to them you decide that you like 4 of the songs. with the random feature on your player, each of the 8 songs is played once in random order. find the probability that among the first two songs played (a) you like both of them. would this be unusual? (b) you like neither of them. (c) you like exactly one of them. (d) redo () if a song can be replayed before all 8 songs are played.