How many degrees is the missing angle?

(Fill in the blank HURRY PLEASE) I’ll give brainliest

12. decide whether each statement is always true, sometimes true, or never true. a. when corresponding points of an original figure and its reflection are connected, the resulting segments are all perpendicular to the line of reflection. b. when a point is reflected over a horizontal line, the y-coordinate of the point stays the same. answer both questions and explain

Anyone know? is appreciated! will mark brainliest if correct!

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42