tertre

hint: apply radical rule!

I'll post a solution later, but my answer is: $\frac{\sqrt{2h-2x}}{h}-i \frac{\sqrt2\sqrt x}{h}$

Yes, 9!=9*8*7*6*5*4*3*2*1

11!=11*10*9*8*7*6*5*4*3*2*1.

We see that 11*10 is extra, or $\boxed{110}$

Thanks so much! 

Sol: 5x=100%

x=20%, so 20%/5=4%

Thanks so much, CPhill! 

Yay! Thanks so much, CPhill! 

Wow, thanks so much, EP! 

Thanks so much, EP!

Thanks so much, CPhill!

Thanks so much, CPhill!

Sorry, but that's incorrect.