BRAINLIEST TO CORRECT HURRY

How do you use the additive inverse to evaluate an expression that uses subtraction in a full sentence

How many heads would you expect if you flipped a coin twice? first, fill in the table below with the correct probabilities. hint: the sample space for flipping a coin twice is {hh, ht, th, tt}. a = b = c = f

Either enter an exact answer in terms of \piπ or use 3.143.14 for \piπ and enter your answer as a decimal.