Is 5.39 rational or irrational

What is the probably of getting heads when poing a coin and getting a number greater than or equal to 5 when rolling a single diea) 1/6b) 1/3c) 1/4d) 1/12

What is -23,-19,14,5, and -8 in order from least to greatest

While reviewing for exams a teacher knows that the number of topics he can cover is directly proportional to the length of time he has to review. if he can cover 9 topics in a single 45-minute period, how many topics can he cover in a 1-hour period? a) 5 b) 7 c) 10 d) 12