Which equation is correct for triangle xyt answers: a.) cos t=4/17 b.) sin t=4/17 c.) cos t = 17/4 d.) sin t = 17/4

Solve 2x+y=3 x+y=5 in substitution method

Me, prove a quadrilateral with vertices g(1,-1), h(5,1), i(4,3) and j(0,1) is a rectangle using the parallelogram method and a rectangle method.

Standard deviation of 19,29,21,22,23