Does anyone know how to do this i am not sure how to solve this !

In an experiment you are to flip a two sided coin 100 times and record 55 heads up and 45 tails up determine the theoretical and experimental probability of getting a heads up in the experiment.

Thee blue triangle has rotated from quadrant i to quadrant iii about the origin. describe the effects of the rotation on the coordinates of the blue triangle.

Y= 4x + 3 y = - 1 4 x - 5 what is the best description for the lines represented by the equations?