Use rounding and compatible numbers to estimate the sum 87+34

What are the excluded values? m+5/mn+3m

Which statement accurately describes how to perform a 90° clockwise rotation of point a (1,4) around the origin?

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