PLEASE HELP ME

6 +___=8

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?

What is the frequency of the sinusoidal graph?

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?