Mr. varello is paid semimontnly. his annual salary is $64,333. what is his semimonthly
salary, rounded to the nearest cent?

Standard deviation of 19,29,21,22,23

We just started the introduction into circles and i have no idea how to do this.

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.