A plane traveled 528 miles to sea moines and back. The prop there was with the wind. It took 6 hours. The trip back was against the wind. It took 12 hours. What is the speed of the plane in still air? What is the speed of the wind?

What basic trigonometric identity would you use to verify that sin x cos x tan x =1-cos^(2)x?

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

Cor d? ? me ? max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.