Which of the following are statistical questions? Select all that apply. How many days are in March?
How old is your dog?
How old are the dogs on this street?
What percent of people like watermelons?
Do you like watermelons?
How many bricks are in this wall?
What was the highest temperature today in town?

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

The answer would be (c)

Answer is negative 2