Answer:
C. 13
Step-by-step explanation:
the line AB on the coordinate grid forms a triangle with the x and y coordinate lines
i used the Pythagorean Theorem
The line AB is the hypotenuse and the coordinate lines x and y are the legs
so here is my work:
c = [tex]\sqrt{a^{2} }+b^{2}[/tex]
c = [tex]\sqrt{12^{2} }+5^{2}[/tex]
c = 13
in conclusion, it's C. 13