I need help plzzz...thanks

Answer:
x=10.58
Step-by-step explanation:
To find the side length of a right triangle, you can use the Pythagorean theorem.
The Pythagorean theorem is [tex]a^2+b^2=c^2[/tex]
the c is the hypotenuse of the triangle, so 16.
the a and b are the other sides of the triangle, so x and 12.
Therefore, [tex]x^2+12^2=16^2[/tex]
now you can solve the equation.
[tex]x^2+144=256[/tex]
-144 -144
[tex]x^2=112[/tex]
now you have to square root both sides of the equation.
[tex]\sqrt{x^2} =\sqrt{112}[/tex]
x=10.58