Answer:
The answer is A because I did this and reviewed the answers and it said A for me.
(x)^2+(5)^2=(9)^2
Step-by-step explanation:
(a)^2+(b)^2=(c)^2
x^2+25=81
-25 -25
x^2=56
x=28
p.s. this ^2 means squared
0+100 1+1000 2+2000 3+3000
yes it does I had this question