Answer: It is 5
Step-by-step explanation:
[tex]A^{2}[/tex] +[tex]B^{2}[/tex]= [tex]C^{2}[/tex]
In this case A^2 is what we don't know.
B is 12 and C is 13.
The equation would now be ?+[tex]12^{2}[/tex]=[tex]13^{2}[/tex]
[tex]12^{2}[/tex]=144
[tex]13^{2}[/tex]= 169
so the equation is now, ?+144=169 so if you subtract, 144 from 169 to find out what "?" is, it will be 25
so if you square root [tex]\sqrt{25}[/tex] , it will be 5 (hence [tex]5^{2}[/tex] being 25)
*I hope this helps!!*
