Is the sequence 5,8,11,14,...... arithmetic?

yes or no?

if the answer is yes, what is the common difference?

Is the sequence 5,8,11,14,...... arithmetic?

yes or no?

if the answer is yes, what is the common difference?

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Fullerton, CA

An arithmetic sequence is a sequence of numbers such that the difference between the consecutive terms is constant. For instance, the sequence 5, 7, 9, 11, 13, 15 … is an arithmetic sequence with common difference of 2.

-Wikipedia

In Wikipedia's example,

5 1st term

5+2 = 7 2nd term

7+2 = 9 3rd term

...

( )+2= ( ) nth term

...

Formula for the n-th term,

a_{n}=a_{1}+(n-1)(d)

a_{n} is the n-th term

a_{1} is the first term

d is the difference

So in wikipedia's example,

a_{n}=a_{1}+(n-1)(d)

a_{n} = 5+(n-1)*2

Use your own numbers, and try to put the right parts into the formula.

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