Answer:
[tex]x=\sqrt{13}[/tex] (C.)
Step-by-step explanation:
[tex]a^{2} +b^{2} =c^{2}[/tex]
[tex](2^{2} )+(3^{2})=x^{2}[/tex]
[tex]4+9=x^{2}[/tex]
[tex]13=x^{2}[/tex]
[tex]\sqrt{13} =\sqrt{x^{2} }[/tex]
[tex]x=\sqrt{13}[/tex]
