Help! 20 Points! + Brainliest! Which expressions have been simplified correctly? Choose exactly two answers that are correct. xy^-3=1/xy^3
z^-2=1/z^2
2^-4=-16
(ab)^0=1

What is the rotational symmetry of a wheel

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.

Graph g(x)=2cosx . use 3.14 for π . use the sine tool to graph the function. graph the function by plotting two points. the first point must be on the midline and closest to the origin. the second point must be a maximum or minimum value on the graph closest to the first point.