Answer:
√27
Step-by-step explanation:
use the pythagorean theorem
3²+x²=6²
9+x²=36
x²=27
√x²=√27
x=√27
Answer:

Step-by-step explanation:
srry if its wrong but I think it's right :)
btw for the first one
p=19.53
I think it might be 11x-8
I'm really sorry if that's wrong
Im not in this math section yet but i think that you can look it up as a worksheet and find the answer on google.
Answer:
7
Step-by-step explanation: 6 + 5 + 8 + 5 + 9 + 6 + 7 + 5 + 12 = 63 so now u just divide that by 9