what are you looking for here? Arithmetic rule, difference (which is -5) ?

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what are you looking for here? Arithmetic rule, difference (which is -5) ?

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The sequence given is an Arithmetic Progression.

Arithmetic Sequences are characterized by:

The first term=8

The last term=12

Common Difference=-5

You can opt to solve for the nth term of the progression, using the formula:

An = A1 + (n-1) d

where An=the value of the nth term

A1= first term (which is 8)

d= common difference

For example, we are looking for the 8th term. So:

8th term = 8 + (8-1) x -5

8th term = -27

We can also solve for the sum of the Arithmetic Series, using the formula:

Sn = n/2 x (A1 + An)

Arithmetic Sequences are characterized by:

The first term=8

The last term=12

Common Difference=-5

You can opt to solve for the nth term of the progression, using the formula:

An = A1 + (n-1) d

where An=the value of the nth term

A1= first term (which is 8)

d= common difference

For example, we are looking for the 8th term. So:

8th term = 8 + (8-1) x -5

8th term = -27

We can also solve for the sum of the Arithmetic Series, using the formula:

Sn = n/2 x (A1 + An)