Answer:
1/2
Step-by-step explanation:
If a spinner is divided into quarters, one section would be 1/4. So, if you spin twice you would get, 1/4 + 1/4 = 2/4 = 1/2
So, your answer would be 1/2
12
Do 1 divided by 4 and you get 0.25 then divide 3 and 0.25 and you get 12
2.7 x 10^-7 :)