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anonymous
 one year ago
The first term of an arithmetic sequence is 8 and the common difference is 3.
The last term of the sequence is 100. How many terms are there in the sequence?
I have been trying to apply a formula that i will post a picture of but its not working, would like some help showing me what to do please!
anonymous
 one year ago
The first term of an arithmetic sequence is 8 and the common difference is 3. The last term of the sequence is 100. How many terms are there in the sequence? I have been trying to apply a formula that i will post a picture of but its not working, would like some help showing me what to do please!

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the formula I tried: \[S _{n}= \frac{ 1 }{ 2 }n \left[ 2a +(n1)d \right]\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Here was me trying it

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i got answer for this but different method

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I am learning from my textbook and I am pretty sure they want me to use that method to find it since it was in the example, but I am open to learning a different one! The answer is 37.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0great let me show you the way @Zas

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so thing you used there  the a+(n1)d  that will always work for this type of question?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yeah wait i will explain when to use the formula you gave earlier

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Because I also think that they actually wanted me to use that and I was just doing the wrong thing :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0a simple example to show it uses ^_^ hope helps you to understand well

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh I see, I just used the wrong one didn't I? Oh well, than you very much!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0no problem im glad i helped you with that question ^_^ dont worry you just need a lot exercise more
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