WILL MARK BRAINLIEST IF RIGHT! If quadrilateral ABCD rotates 90° counterclockwise about the origin, what are the coordinates of A′ in quadrilateral A′B′C′D′ ?

A. (2, 1)
B. (-2, -1)
C. (-2, -2)
D. (-2, 0)

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 =