Which number is the discriminant of a quadratic equation whose roots are real, unequal and irrational? 1) 0
2) -5
3) 7
4) 4

List the 10 possible samples (without replacement) of size 3 3 that can be obtained from the population of five officials.

Which of the following questions is a statistical question? (2 points) how many professional sport leagues are there? where do the professional sport leagues play? how many hours of professional training took place over the weekend? how many hours do you spend each week training for a sports league?

The focus of parabola is (-4, -5), and its directrix is y= -1. fill in the missing terms and signs in parabolas equation in standard form