The first and fifth terms of a geometric progression (G. P) are 2.5 and 40 respectively. If the common ratio is positive, find the sum of the first eight terms of the geometric progression​

Asap the total attendance for all of a baseball league in 2012 was about 7.5×107 fans, while the attendance for the tornadoes in 2012 was about 1.5×106 fans. about how many times more was the attendance for the entire baseball league than the attendance for just the tornadoes? 50 times more 10 times more 2 times more 5 times more

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Noor brought 21 sheets of stickers. she gave 1/3 of a sheet to each of the 45 students at recess. she wants to give teachers 1 1/2 sheets each.