To the nearest tenth of a second, how much time would it take the penny to hit the ground? a. 0.5 seconds b. 0.6 seconds c. 0.7 seconds d. 0.8 seconds

Name the most appropriate metric unit for each measurement like the mass of cow

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Needmax 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.