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#1 2015-11-15 08:26:04

lisathedork
Member
Registered: 2013-10-24
Posts: 36

Arithmetic Sequence

Hello can someone help me with this one problem?

Given the Arithmetic sequence A1, A2, A3, A4

50, 60, 70, 80

What is the value of A29?

Can I get any notes on how to do this?

Please provide links also, thanks again.

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#2 2015-11-15 09:12:41

evene
Member
Registered: 2015-10-18
Posts: 272

Re: Arithmetic Sequence

I'm not that great with Arithmetic Sequences, so correct me if I'm wrong!


Using the formula

, we get:




Last edited by evene (2015-11-15 09:14:21)

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#3 2015-11-15 13:07:25

evene
Member
Registered: 2015-10-18
Posts: 272

Re: Arithmetic Sequence

is the common difference. The difference between the 2 numbers. So from 50 to 60, the difference is 10. From 60 to 70, the difference is 10. And so on...

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#4 2015-11-15 15:05:50

lisathedork
Member
Registered: 2013-10-24
Posts: 36

Re: Arithmetic Sequence

Wow, I didn't know it was that easy!

Thank you so much for the help, I did the other problems with no trouble.

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#5 2015-11-16 12:37:20

evene
Member
Registered: 2015-10-18
Posts: 272

Re: Arithmetic Sequence

Ok, no problem!

Last edited by evene (2015-11-16 12:41:15)

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