<1 and <2 are vertical angles. if m<1= 5x + 12 and M<2 =6x-11, find m< 1

What is the square root of 45? (step by step working plz)

There were 816 people at a concert when a band started to play. after each song, only half the people stayed to hear the next song. how many people were left at the concert after x songs? write a function to represent this scenario.

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