35 - 34
3+10 121
105
los
a bag contain blue black balls and 5 Yellow baz two
balls are taton at random me ather the other without
replacement fond
both boro Probability That
a They ar both black
Yellow
. The forse is yellow and the second is black
a one is yecrow and the others black
they are of the same colour
5

40 & 50 in the right corner are the complementary angles as when placed in a sum (added together) they make 90°

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