Suppose that an object is dropped from a height of h meters and hits the ground with a velocity of v meters per second. Then y=19.6h. If an object is dropped from a height of 21.3 meters, with what velocity does it hit the ground?
Round your answer to the nearest tenth.

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.

Which best explains why this triangle is or is not a right triangle ?

What is the surface area of the sphere?