A) Gravity Because gravity moves and makes the earth move
It's impossible for 2 factors of 12 to add up to 16. So there would be no answer to that.
Hey there!
"What ratio forms a proportion with
?"
-
(for the decimal)
But in order for you to solve this particular equation you'd have to go in with two (like multiplying by two)
Your result: 
Good luck on your assignment and enjoy your day!
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Answer:
yes,it will be because. 12^2+16^2=20^2
144+256=400so,that it prove the two side of a sum is equal to opposite side.so,the the firm be a right angle.
2/4 = 1/2
2/6 = 1/3
4/12 = 1/3
8/24 = 1/3
If you need help on how to solve these, you can contact me directly