Help pls I just need this last ome

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

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).