Whats the answer help please

In WXYZ, “Z” is the last angle mentioned...so to find it’s angle simply look at the last angle in PQMN, which would be the letter “N”. N = 100 degrees, so that is the correct answer...”Z” also = 100 degrees.

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