A math class conducted an experiment where each student flipped a coin 10 times. The class flipped heads 158 heads and 172 tails. How does the experimental probability of flipping heads compare with the theoretical probability of flipping heads? Explain how you arrived at your answer. PLEASE HELP

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14