Answer:
perpendicular(p)=5
base(b)=12
hypotenuese(h)=?
using pytha goras theorem,
h^2=P^2+b^2
h^2=(5)^2+(12)^2
h^2=25+144
h^2=169
h^2=13^2
h=13.
15. 
Step 1: Distribute the subtraction sign to all the numbers in the second set of parentheses...


Step 2: Combine like terms (
's go with
's)




Step 3: Combine like terms (
's go with
's)




Step 4: Combine like terms (normal numbers go with normal numbers)

1 + 2
3

You were correct!
16. 
I don't really know how to explain this one but I got: (7m-6n)(7m-6n)
Point C, since pi=around 3.14
Hope that helps :)