Pls help I will mark brainliest

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

3x + 4y = 5 x- 3y = -7 solve by substitution

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83