Assuming that C is the hypotenuse...
The formula you want to use is:
a^2 + b^2 = c^2
We start by squaring 10, which is 100. 5^2 is 25. Now that we have the values, we can do the equation.
100+25=c^2 100+25=
Now, square root 
C= 11.180
I believe it's the same as adding 8+3, but you add the negative sign to your answer
so 8+3 = (-?)
Answer:
B
Step-by-step explanation:
0.25 = 1/4 = 5/20
0.35 = 35/100 = 7/20
5/20 + 7/20 = 12/20 = 6/10 = 3/5
=0.4237288136 ..... 0.423 | 7 +1 ~~ 0.424
60 percent of 150 is 90. So that means 60 shots do not go in.