What is essential to delivering a successful presentation?

a: the principles of good communication
b: professionally designed slides
c: using jargon
d: facing the computer

Duplicating objects creates copies that a. move differently than the original object b. erase the original object c. look and act like the original object d. add events to a game

The north and south regions had very diferent economies in the 1800s.

Assume that there is a 4% 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 three independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?