Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
(sum from 1 to 10 of (0.85*1.5)^x) / (sum from 1 to 10 of 1.5^x)
(sum from 1 to 10 of (0.85*1.5)^x) / (sum from 1 to 10 of 1.5^x)
Natural Language
Math Input
