Two angles are given.
m2g = (2x -90)
mzh= (180 - 2x)º
which statements are true about 2g and zh if both angles are greater than zero? select all that
apply.

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.

Ineed with number 17 i don’t get it at alll

What is the standard form of -5x^2+2x^4-11+x^3+3x