Subtract 8-4 1/2 what is the answer

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

F(x)= 4x g(x) =x-1 what is f(x) divided by g(x)

Mis the midpoint of rq if rm equals 2x + 5 and mq equals 4x - 9 what is the length of rq