Apollo 8 was the first manned spacecraft to orbit the moon at an average altitude of 185 km above the moon's surface. determine an equation to model a single circular orbit of the apollo 8 command module if the radius of the moon is 1,740 km. let the center of the moon be at the origin.

Ihave trouble finding the nth term of a linear sequence

You're locked out of your house. the only open window is on the second floor, 25 feet above the ground. there are bushes along the edge of the house, so you will need to place the ladder 10 feet from the house. what length ladder do you need to reach the window?

Assume that there is a 11% rate of disk drive failure in a year. a. if all your computer data is stored on a hard disk drive with a copy stored on a second hard disk drive, what is the probability that during a year, you can avoid catastrophe with at least one working drive? b. if copies of all your computer data are stored on four independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?