The sum of the measures of the interior angles of a polygon is 540 degrees. what kind of polygon is it

What is an alternate exterior angle

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?

Write an inequality for this sentence the quotient of a number and -5 increased by 4 is at most 8