Factor completely. if a polynomial is prime, state this
-9+18x²+21x

In angle pqr find the measure of

Can someone plz me with 11,12,13 plz show work

People seem to like movies about comic book heroes. the histograms below show the gross revenue (in hundreds of millions of dollars) of movies based on heroes from the two most popular comic book companies. which pieces of information can be gathered from these histograms? choose all answers that apply: movies based on marble heroes bring in more money on average.(choice b)ball marble movies bring in more money than all dx movies.(choice c)cthe amount earned by dx movies varies much more than the amount earned by marble movies.(choice d)dnone of the above