Answer: C
Step-by-step explanation:
The triangle in the picture is a right triangle. We can use the Pythagorean Theorem to find x.
[tex](\sqrt{5})^2 +(\sqrt{5} )^2=x^2[/tex] [exponent]
[tex]5+5=x^2[/tex] [add]
[tex]10=x^2[/tex] [square root both sides]
[tex]x=\sqrt{10}[/tex]
Therefore, we know that C is the correct answer.
