Solve the system of equations below by graphing both equations with a pencil and paper what is the solution y= -2x +4 y=x-2 A. (1,-1)
B.(-1,-3)
C.(-2,-4)
D.(2,0)

Multiply. −2x(6 x 4 −7 x 2 +x−5) express the answer in standard form. enter your answer in the box.

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?

Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota