What is the ratio of TV to WX

The heaviest 16% of all men in weight weigh more than how many pounds ?

Fast! find the length of cu. the triangles are similar. show your work.

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?