Answer:
keyonn delets it
Step-by-step explanation:
Alright, so in this you're going to want to set the ratios equal as follows:
2/12 = x/18
Therefore by cross-multiplying:
2*18 = 12x
36=12x
36/12=x
x=3
Step-by-step explanation:
Given the Arithmetic sequence
An arithmetic sequence has a constant difference d and is defined by
as
∵
∵
∵
Therefore, the indicated nth partial sum of the arithmetic sequence is 1530.
ANOTHER METHOD
as
n = 30
as
and
so
The answer is 2 or 4 .
Hope this helps ❤️