Carolyn is making a quilt using blocks like the one shown below. all the shaded squares are the same size and all the shaded triangles are the same size. what is the total area of all the shaded pieces of the quilt block?

The computer that controls a bank's automatic teller machine crashes a mean of 0.6 times per day. what is the probability that, in any seven-day week, the computer will crash less than 5 times? round your answer to four decimal places