Answer:
835.865333
Step-by-step explanation:
16.6×16.6=275.56
275.56×9.1=2507.596
2507.596÷3=835.865333
<span>Unless you have some other choices, I'd have to say Stratification, to make sure the groups are representative and heterogeneous.
I hope I helped.</span>
You would cross multiply for this. So 8.4/6 = x/14 to get 6x=117.6 Now you divide 117.6 by 6 to get your final answer 19.6
So x equals 19.6