Who is the theorem named after Pythagorean theorem

Which math sentence can be used to determine if the triangle is a right triangle?

Which equation is y = -6x2 + 3x + 2 rewritten in vertex form?

Do one of the following, as appropriate: (a) find the critical value z subscript alpha divided by 2 , (b) find the critical value t subscript alpha divided by 2 . 99%; nequals 17; sigma is unknown; population appears to be normally distributed.