What is the range of this data set? 1.9, 15.5, 1.3, 16.5, 5.5, 20.2, 12.1, 9.6, 16.8

14.9
16.3
18.9
20.2

In the past, professional baseball was played at the astrodome in houston, texas. the astrodome has a maximum height of 63.4 m. the height of a baseball t seconds after it is hit straight up in the air with a velocity of 45 ft/s is given by h = -9.8t2 + 45t + 1. will a baseball hit straight up with this velocity hit the roof of the astrodome? use the discriminant to explain your answer.

The probability that a student graduating from suburban state university has student loans to pay off after graduation is .60. if two students are randomly selected from this university, what is the probability that neither of them has student loans to pay off after graduation?

The sum of the squares of two numbers is 8 . the product of the two numbers is 4. find the numbers.