21. You throw a ball to your friend. The ball leaves your hand 5 feet above the ground and has an initial vertical velocity of 50 feet per second. The path of the ball is modeled by the function h=-16t? + 50t + 5 [3
Points]
a. How long does the ball take to reach its maximum height?
b. What is the maximum height of the ball?
c. How long does it take for the ball to hit the ground?

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

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’s the answer ? use the picture to see the problem