A firecracker is shot upward offabalcony that is 12 feet above the ground with an initial velocity of v feet per second. The firecracker reaches a maximum height of 30.02 feet at 1.156 seconds after being shot upward. The formula for the vertical motion of an object is h(t)=1/2at^2+vt+s, where the gravitational constant, a ,is -32 feet per square second, and h(t) is the height in feet modeled as a function of time, t.

What is the percentile for data value 6 in the following data set? 4 13 8 6 4 4 13 6 4 13 2 13 15 5 9 4 12 8 6 13 40 25 35 62

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables