The shaded area in the distribution below represents approximately 95% of the data. Use the diagram to find the mean and the standard deviation.

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

Find the volume of the solid whose base is the region bounded by f(x), g(x) and the x-axis on the interval [0, 1], and whose cross-sections perpendicular to the y-axis are squares. your work must show the integral, but you may use your calculator to evaluate it. give 3 decimal places for your answe