What is the area of the picture

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.

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?

Write an inequality for this description. - one fourth of the opposite of the difference of five and a number is less than twenty.