Richard had a 550-piece puzzle with an image of a crossword puzzle. He took out a handful of the pieces to examine, and found the following number of letters on the pieces.
1, 4, 6, 6, 1, 4, 4, 6, 6, 1
Assuming that the sample was representative of the puzzle, what was the mean number of letters on a piece of the puzzle?

In the first triangle 80+20+p=180 (since sum of all angles of a triangle is 180)so p= 80also in second triangle 55+45+q=180 (since sum of all angles of a triangle is 180)so q=80so we can conclude that p=80 degrees q=80 degrees so p=q=80 degreeshence option b is correct

The answer is part a: use

21, i'm pretty sure it's right lol

The answer is 270 cars.you can do this by making a proportional relationship. for instance, 200 is the whole we are using, so on a “number line” 200 would be over 100%. now, since he sells 35% more, add 35% to 100% to get 135% on the other side of the “number line” on the bottom half, leaving the top half empty.cross multiply 200 by 135 then divide by 100 to get your answer. i hope this , if it did, , if you don’t mind, giving me brainiest! 200/100% } 200 • 135 /100 ? /135%