5-1 16. A ball is thrown vertically upwards from a point O at a speed of 30 ms.
a) Find the time that the ball is a height of 25 m above point o
i) for the first time
ii) for the second time.
b) Find the total time that the height of the ball above point O is at least 25 m.

Which of the binomials below is a factor of this trinominal? x^2-13+30

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.

Which of the points a(6, 2), b(0, 0), c(3, 2), d(−12, 8), e(−12, −8) belong to the graph of direct variation y= 2/3 x?