can someone help me please

Logan wants to know how many skateboards have defective parts. he inspects 20,000 skateboards and keeps track of the number of defects per board. use his probability distribution table to find the expected value for defects on a skateboard.

Acircle has a circumference of 28.36 units what is the diameter of the circle

How long does it take natsumi to clean up after she is done? table: .area time30. 245. 2.7560. 3.5