How many times does 24 go into 36

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.

The evening newspaper is delivered at a random time between 5: 30 and 6: 30 pm. dinner is at a random time between 6: 00 and 7: 00 pm. each spinner is spun 30 times and the newspaper arrived 19 times before dinner. determine the experimental probability of the newspaper arriving before dinner.