I need help on these two questions: https://web2.0calc.com/questions/does-anyone-know-this
And this one: https://web2.0calc.com/questions/help-please-thanks_5
I looked at one, although my answer may not be correct
The other already seemed to be looked at. I did not check for accuracy.
Yeah, I checked at the one that geno3141 answered, and it seemed right and I understood the solution, but for some reason it's incorrect. I tried doing it again using his way and multiplied the fractions and got 64/405 but it was still incorrect.
So I'm not really sure about that problem.