Kal. Is decorating the outside edge of a square bulletin board. He needs to know the side length of the bulletin board. The area bulletin board is and square feet. Which shows a side length in feet of the bulletin? A. n^2 B. n/2 C. Square over n D.^3 square over n

The first hexagon is dilated to form the second hexagon select the answers from the drop box menus to correctly complete the statement

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?

I’m really confused and need to learn this