Ah help me plz imma fail

Which statement is true 1.the pythagorean theorem can be used to find the missing side of any triangle 2.the pythagorean theorem can be used to find the missing side of any polygon 3. the pythagorean theorem can be used to find the missing side of any right triangle 4.the pythagorean theorem can be used to find the missing side of any isosceles triangle

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

What is the measure of angle x? answer