Answer:3.9
Step-by-step explanation:
anytime there is to negatives they cancel eachother out and make a positive.
c^2=a^2+b^2
c^2 = 12^2 + 5^2
C^2 = 144 +25
C^2 = 169
c=13
DF = 13
It would be graph B because it is the only one that is close to it.
If i'm wrong it is ok with me