Answer:
21
Step-by-step explanation:
3^2=9
9+12=21
Keep it up
Answer:
C. ∠10
Explanation:
A theorem states that the two angle that are in the same side and are opposite to each other, they add up to 180°, which is supplementary.
If those question marks are supposed to be a radical, then 12 and 13. The square root of 147= 12.12, which puts it between 12 and 13.
Answer:
380cm
Step-by-step explanation:
i really hope thats right!