1. Find the length of segment AB with endpoint A(-7,8) and B(-4,-4). 2. Find the midpoint of the segment CD if C(1,-1) and D(5,7).

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.