Answer:
The common difference is 
or 0.2
Step-by-step explanation:
Given:
Arithmetic Sequence -2, -1 4/5, -1 3/5, -1 2/5,
First term = a₁ = -2
Second term = a₂ = 
Third term = a₃ = 
Fourth term = a₄ = 
To Find:
Common Difference = d = ?
Solution:
Formula for Common Difference d ,
∴ 
The common difference is or 0.2
A co-terminal angle is basically any radian value that you can get by either adding or subtracting a full rotation from the original one.
In this case, you can do 2pi/7 + 2pi, or 2pi/7 - 2pi.
Your answer is either 16pi/7 or -12pi/7. There’s actually an infinite amount of answers you could get, but these two are the easiest to come by.
The answer is 9 because 6/2 is 3 and if you multiply that by 1 it's 3 and if you multiply 3 by 2 you get 6 so you add them up and get 9.
Ebukas Definition is correct. It is all the points on the line between the two endpoints.
