The number 5 is one of the solutions for the inequality 3x < 21.
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Suppose there are 10 five and six-year-old attending a birthday party. when a 30 year old mother walks into the room with an infant in her arms, what happens to the mean age in the room? what happens to the standard deviation of ages in the room? a. the mean and standard deviation of both change. b. the meaning will change, but the standard deviation will stay approximately the same. c. i mean will stay approximately the same, but the standard deviation will change. d. the mean and standard deviation will both stay approximately the same.

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

If the value of cos330°is√3/2 then find cos 165°.