Can somebody plz help answer these questions (only if u know how to do this) thanks a lot! :)

WILL MARK BRAINLIEST WHOEVER ANSWERS FIRST :DDD

Can somebody plz help answer these questions only if u know how to do this thanks a lot WILL MARK BRAINLIEST WHOEVER ANSWERS FIRST DDD class=
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Answer:

12. 3:12

Step-by-step explanation:

that is 12