((0.8499498 × ((1−2.9285714) / 1.7660825) + 0.2260608 × (((3.5−2.7857142) / 1.149534)))

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.