Ox+ Oy - Oz = 3 0x+ Oy+ OZ=-1
Ox+ Oy+ Oz = 18
what is the determinant of the coefficient matrix of the system?

33% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. if convenient, use technology to find the probabilities.

Measure of angles 31 (x+4) (3x+9) me

For the inequality |c| < |d| to be true, which of the following must be true?