Saturday

April 18, 2015

April 18, 2015

Posted by **Mathew** on Sunday, March 15, 2009 at 10:45pm.

Rewrite each series in a sigma notation and find its sum.

1+.09+.81+...

I have no idea how I find the common difference or ratio in that one.

- Algebra 2 / Trig -
**bobpursley**, Sunday, March 15, 2009 at 10:49pmI dont think you will be able to do it with just those three terms.

- Algebra 2 / Trig -
**Reiny**, Sunday, March 15, 2009 at 10:58pmperhaps you meant to type

1 + .09 + .0081 + ...

otherwise I agree with bob

If so, then

sum = [sigma] (.09)^(i-1) , i goes from 1 to infinity.

use S(infinity) = a/(1-r)

**Answer this Question**

**Related Questions**

calculus - I'm having trouble with a geometric series problem. Determine if the ...

math - hi i startted the problem below by writing a sigma notation of sigma[(2^(...

math - hi i startted the problem below by writing a sigma notation of sigma[(2^(...

algebra(check) - 1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4 a...

algebra - 1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4 a.15 b....

algebra - 1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4 a.15 b....

algebra - 1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4 a.15 b....

Algebra - find the indicated sum not sure how to type the sigma sign, but here ...

Advanced Algebra - Express the infinite series below using sigma notation and ...

trig - It's in sigma notation, so I'm not sure how to type it. I'll just use E ...