Δabc is a right triangle. δa'b'c' has a hypotenuse of 10 after δabc undergoes a dilation by a factor of 2. if δabc has a short leg of 5 - x and a long leg of 2x, what is the length of the short leg of δabc?

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?