W(t) models the daily water level (in cm) at a pond in Arizona, t days after the hottest day of the year. Here, t is entered in radians. W(t) = 15cos((2π/365) t)+43 What is the first time after the hottest day of the year that the water level is 30 cm?

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 inequality has a dashed boundary line when graphed ?

Select the graph of the solution. click until the correct graph appears. |x| = 3