1.which statements must be true? select each correct answer. ca=12yz xy=2ca ab¯¯¯¯¯∥xz¯¯¯¯¯ cb¯¯¯¯¯∥xy¯¯¯¯¯¯ cb=ba 2.what is de ? 3.what is qr ? 4.what are the coordinates of the endpoints of the midsegment for △rst that is parallel ts¯¯¯¯¯ ? 5.what are the coordinates of the endpoints of the midsegment for △lmn that is parallel to ln¯¯¯¯¯ ?

List x1, x2, x3, x4 where xi is the midpoint endpoint of the five equal intervals used to estimate the area under the curve of f(x) between x = 0 and x = 10.

Ihave a triangle with a 60 degree angle. lets use d for that angle. what are the values of e and f if d is 60 degrees? and what do you notice about the values of e and f?

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?