Walking across a bridge, a tourist throws a penny into the water below. The penny's height above the water in meters, p(x), depends on the time in seconds after throwing, x, and can be modeled with the function p(x) = -16x2+ 7x + 15. Approximately how many seconds after being thrown will the penny hit the water? 0.2 seconds 15.8 seconds 1.2 seconds 15 seconds​

Vinay constructed this spinner based on the population of teachers at his school according to vinays model what is the probability that he will have a male history teacher two years in a row

Need now 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.

What is the radical expression that is equivalent to the expression 27 1 over 5?