Question

What is the value of the 30th term in the following arithmetic sequence?

1 question
12, 6, 0, -6, ...
-186
342
186
-162
2 question
What is the value of the first term in the following arithmetic sequence?
-9, -2, 5, 12, ...
9
-7
7
-9
3 question
What is the formula for the following arithmetic sequence?
-9, -2, 5, 12, ...
an = -9 + 7( n - 1)
an = -9 + (-7)( n - 1)
an = 7 + (-9)( n - 1)
an = 9 + (-7)( n - 1)
4 question

What is the common ratio in the following geometric sequence?
3, 12, 48, 192, ...
-3
1/4
3
4

Answer 1

Answer:

There is no N in an arithmetic sequence

n=(last term-first term)÷d+1