Answer:
See below.
Step-by-step explanation:
Formula:

First term: n = 1

Second term: n = 2

Third term: n = 3

Fourth term: n = 4

Tenth term: n = 10

Insert a picture so I can help you out :)
Answer:31.42
Step-by-step explanation:First you need to find the radius of the circle,so you know the radius is half of the diameter,so you take the radius(2) and multiplys by the pi which is 3.14 the formula is r^ x π
Answer:
Number 2
Step-by-step explanation:
Go from the largest negative number then go down the numbers till 0 then go up with the rest of the number is order.
Answer:
56
Step-by-step explanation:
Because there are 8 names and when you choose a name there are 7 people that can be a pair so 7*8=56