What is the sum of the geometric series in which a1 = 2, r = 3, and an = 486?

If i have a 24 in loaf of bread and i cut it into two pieces one 9 in how long was the other

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin

Reduce fractions expressing probability to lowest terms. in 3,000 repetitions of an experiment, a random event occurred in 500 cases. the expected probability of this event is?