The sum of two numbers is 17 and their difference is 29. what are two numbers?

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

How can constraints be used to model a real-world situation?

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?