D = (xlx is a whole number) E = (xlx is a perfect square between 1 and 9) F=[xlx is an even number greater than or equal to 2 and less than 9) E U F is (2,4,6,8)​ true or false

Which statement accurately explains whether a reflection over the x-axis and a 180° rotation would map figure acb onto itself?

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?