The height h m of a projectile after t s is given by the equation 480t - 5.0t^ 2 +8 h use differentiation to calculate the maximum height reached by the projectile. give your answer in m to 3 significant figures maximum height: m

Given: f(x) = 2x + 5 and g(x) = x2 and h(x) = -2x h(g(f( = x2+ vx+ x + y

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. last year there were 63 inches of snow. find the number of standard deviations from the mean that is, rounded to two decimal places. 0.44 standard deviations below the mean 2.50 standard deviations below the mean 0.44 standard deviations above the mean 2.50 standard deviations above the mean

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?