How would you simplify (-4r^5)(2r^8)?

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)

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

6cm10 cma conical paper cup has dimensions as shown in the diagram. how much water can the cup hold when full?