On a Tuesday in Portland, Maine, the temperature at 3:00 PM was –5.5ºC. The temperature at 7:00 PM that same day was –10.3ºC. If the temperature changed at a constant rate from 1:00 PM to 7:00 PM that day, what was the temperature at 1:00 PM? *
1 point
A.–15.1ºC
B.–7.9ºC
C.–3.1ºC
D.–0.7ºC

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