A building engineer analyzes a concrete column with a circular cross section. The circumference of the column is 18π meters.
What is the area A of the cross section of the column?

Solve for x, y, and z. show all steps.

Which statement accurately explains whether a reflection over the x-axis and a 180° rotation would map figure acb onto itself?

Use the frequency distribution, which shows the number of american voters (in millions) according to age, to find the probability that a voter chosen at random is in the 18 to 20 years old age range. ages frequency 18 to 20 5.9 21 to 24 7.7 25 to 34 20.4 35 to 44 25.1 45 to 64 54.4 65 and over 27.7 the probability that a voter chosen at random is in the 18 to 20 years old age range is nothing. (round to three decimal places as needed.)