A regular hexagon is rotated about its center. What degree of rotation maps the pentagon onto itself? 45
60
72
180

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

Atotal of 766 tickets were sold for the school play. they were either adult tickets or student tickets. there were 66 more student tickets sold than adult tickets. how many adult tickets were sold?

(10. in the figure, a aabc is drawn tocircumscribe a circle of radius 3 cm ,such thatthe segments bd and dc are respectively oflength 6 cm and 9 cm. find the length ofsides ab and ac.