I need the rule of Sum

[Barbra]

How SUM (1/10)^k=>1
Equals 1/1-1/10 ??

 

[Deleted member 4993]

How SUM (1/10)^k=>1
Equals 1/1-1/10 ??

Please share your work/thoughts regarding this problem so that we know where to begin to help you.

 

[Dr.Peterson]

How SUM (1/10)^k=>1
Equals 1/1-1/10 ??

You mean 1/(1-1/10). Use parentheses carefully!

This uses the formula for the sum of an (infinite) geometric series. Have you learned about those?

Geometric Sequences and Sums

Geometric Series | Purplemath

Explains the terms and formulas for geometric series. Uses worked examples to demonstrate typical computations.

www.purplemath.com