find the first three terms of each arithmetic series described
a1=1,an=19,Sn=100
and
n=16,an=15,Sn=-120

Question

find the first three terms of each arithmetic series described
 a1=1,an=19,Sn=100
and 
n=16,an=15,Sn=-120

solomonzelman · Answer

maybe you made a little mistake in the question ?

anonymous · Answer

NOPE I JUST RECHECK IT @SolomonZelman

solomonzelman · Answer

but I only know the first term. I don't which term is 19 in the sequence, n can be any number. Also what is Sn, it can be sum  of any numbers in the sequence.

Do you see what I mean? See why I am troubling ?

anonymous · Answer

IT HAVE A BIG S and a small n @SolomonZelman

solomonzelman · Answer

Yes, I know everything you mean to say. I understand the question, but I am saying that  can't do it. My reason is a lack of info (what I posted before) .

anonymous · Answer

@SolomonZelman  oh lolz how are you in eng and hsitory

solomonzelman · Answer

idk, when it comes to Engish it depends on the question there are hard an easy questions that I can do and that I can not do. Even the easy ones sometimes -:(

I don't really know a lot at history, but what I do know, I know well.