∠A and ∠

B

∠B are supplementary angles. If m

∠

A

=

(

6

x

+

10

)

∘

∠A=(6x+10)

∘

and m

∠

B

=

(

4

x

+

30

)

∘

∠B=(4x+30)

∘

, then find the measure of

∠

B

∠B.

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