Answer:
1/5... 1 on top 5 on bottom
Step-by-step explanation:
sub in the values:
will now be 
now add:

simplify:
1/5
Answer:
x=3
Step-by-step explanation:
using the pythagorean theorem, c^2=a^2+b^2
5^2=x^2+4^2, x=3
Percent means parts out of 100
105%=105/100=1.05
'of' means multiply
105% of 260=1.05 times 260=273