Five balls are distributed between two urns, labeled a and b. each period, an urn is selected at random, and if it is not empty, a ball from that urn is removed and placed into the other urn. in the long run what fraction of time is urn a empty?

James wants to promote his band on the internet. site a offers website hosting for $4.95 per month with a $49.95 startup fee. site b offers website hosting for $9.95 per month with no startup fee. for how many months would james need to keep the website for site a to be a better choice than site b? define a variable for the situation. write an inequality that represents the situation. solve the inequality to find out how many months he needs to keep the website for site a to be less expensive than site b. using words, describe how many months he needs to keep the website for site a to be less expensive than site b.

Aubrey read 29 books and eli read 52 books what number is equal to the number of books aubrey read?

Find the volume of the solid obtained by rotating the region enclosed by the curves y=1x and y=7^-x about the x-axis. (use symbolic notation and fractions where needed.) volume =