Fill in the blank to get the product

What is the sum of these mixed numbers 4 2/3+ 3 1/9

Find the volume of the solid bounded by the plane z=0 and the paraboloid z=1-x^2 –y^2

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