Find the product of 20x9x5.tell which property you used

The difference of 2 numbers is 21 and the quotient of the equation is 4 then what are the two numbers?

Which number line represents the solution set for the inequality -1/2x> 24?

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?