Astudy on students drinking habits wants to determine the true average number of alcoholic drinks all uf underclassmen students have in a one week period. we know from preliminary studies that the standard deviation is around 2.8. how many students should be sampled to be within 1.5 drink of population mean with 90% probability?

Amanager recorded the number of bicycles sold by his company each quarter. his projected sales after t years is given by the expression below. which of the following statements best describes the expression? a. the initial sales of 575 bicycles increases at the rate of 4% over 4 quarters. b. the initial sales of 575 bicycles increases at the rate of 18% over 4 years. c. the initial sales of 575 bicycles increases at the rate of 4% over t quarters. d. the initial sales of 575 bicycles increases at the rate of 18% over t years.

List the sides of δrst in in ascending order (shortest to longest) if: a ∠r =x+28°, m∠s = 2x+16°, and m∠t = x+12°

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)