5! I did this one last year!
The second option! Hope this helps!
Answer:
Step-by-step explanation:
pythagoras theorem
a^2+b^2=c^2
12^2+x^2=13^2
144+x^2=169
x^2=169-144
x=
x=5
Answer:
Line A: -1/2
Line B: -3
Line C: 1/3
Line D: 2
just count how many spaces over and up when they hit the the lines y/x
line a is down 1 right 2 so -1/2
line b is down 3 right 1 so -3
line c is up one right 3 so 1/3
line d is up 2 right 1 so 2