∠a and ∠b are complementary. if ∠b = 41°, what is the measure of ∠a

An advertisement is on a flyer that has a thickness of 8.2 × 10-5 meters. each measurement below is the thickness of a stack of flyers. drag each measurement to the correct stack.

Adam drew two same size rectangles and divided them into the same number of equal parts. he shaded 1/3 of one rectangle and 1/4 of the other rectangle. what is the least number of parts into which both rectangles could be divided into?

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36