suppose you took an exam in your math class last week. suppose there are 32 people in your math class. according to canvas, the class mean was 74% but you know that there were four people enrolled in the class who didn't take the exam and so they got zeros on it, what would be the class mean be if those four zeros were not included

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm

It would equal out to 0 i think