Which expression has a value of 7a (29-18)+(17+8)divided 6 b (29-18)+(17-divided 4c(29++8)divided 2d(29+18)+(17-8)divided 8?

Shryia read a 481 -page-long book cover to cover in a single session, at a constant rate. after reading for 1.5 hours, she had 403 pages left to read. how fast was shryia reading? pages per hour how long did it take her to read the entire book? hours plz i realy need this

Standard deviation of 19,29,21,22,23

90.0% complete a b c d e confirm last week, your delivery runs took 7 hours 12 minutes on monday, 6 hours 46 minutes on wednesday, and 6 hours 53 minutes on friday. what was your average time for a delivery run?