A counselor at a middle school must create an arranged schedule of elective classes for the last 2 periods of the day for all of the 6th grade students. The counselor has 12 electives courses (e. g. art, band, PE, etc.) to choose from and must select 2 ordered classes for each 6th grade student.

How many ways can the counselor arrange the last 2 periods of the day for the 6th grade students?

HELP ASAP I WILL GIVE BRAINLIEST

Aregression was run to determine if there is a relationship between hours of tv watched per day (x) and number of situps a person can do (y). the results of the regression were: y=ax+b a=-0.662 b=30.418 r2=0.703921 r=-0.839

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297