consider the following geometric sequences and find the terms indicated:

*The 1st term is 440 and the 12th is 880. find S6

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- Jul 12th 2010, 01:35 AMjohnsy123geometric series/sequence given question
consider the following geometric sequences and find the terms indicated:

*The 1st term is 440 and the 12th is 880. find S6 - Jul 12th 2010, 01:41 AMProve It
You should know that .

So and .

This means

.

This means .

You should also know that

So

.

Use a calculator to simplify.