Bao wants to prove that if parallelogram ABCD has a right angle, then its diagonals are congruent. B
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Bao says: "I can prove this using the fact that opposite sides in a parallelogram are congruent, and by
establishing the congruence of a single pair of triangles."
Which pair of triangles is Bao referring to, and which criterion should he use for establishing congruence?
Choose 1
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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?