Ineed 20 but if you want you can answer the other questions. it would if you numbered them if you did some of the other questions

The rule for number 20 is plus 1/6, and the unknown term is 5/6.

Step-by-step explanation:1. If you skip the first two fractions and move to 1, 1/6 you will notice that it has an increase of 1/6.

2. Now, to make sure that 1/6 is the correct rule, we do have to go back to the first two fractions and give them common denominators: 1/2 turns into 3/6, and 2/3 turns into 4/6.

3. No once you look at your fractions, you can see that 1/6 is the true rule.

4. Now that we know t he rule we can turn to completing the unknown term. Since we are only moving by 1/6 it makes it very easy to add that 1/6 to your 4/6 to get 5/6. You can't simplify 5/6, so your final answer for the unknown term is 5/6.

Hope this helps :)

wait nvm i know the correct answer now its 100%   81 square feet

~batmans wife dun dun