Jordan scores a 53 on his math test. the class average is 57 with a standard deviation of 2 points. how many standard deviations below the mean did jordan score?

Long division the problem is 40 ➗ 348 = ?

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Fred has a spinner that is split into four equal sections: red, blue, green, and yellow. fred spun the spinner 688 times. which of the following would be a good estimate of the number of times the spinner lands on the green section? a. 269 b. 603 c. 344 d. 189