Question 1157318
1-(1/k2)=.90 How do we solve for k2.
<pre>If that's {{{matrix(1,3, 1 - 1/k^2, "=", .9)}}}, then the other person's answer that k = 10 is WRONG!!! 
As a matter of fact, if the above is what you meant, and if you're looking for {{{k^2}}}, then that's equal to 10. 
If you need a correct answer, you need to present your problem better than you did here. In other words, if it's what I stated above, 
then you should've written: 1 - (1/k^2) = .9, and also k^2, instead of k2. Do you understand what I'm saying?