Determining Equivalent Expressions
Quiz
Active
TIMI
1
2
3
4
UN
8
9
10
Juan used algebraic properties to make an equivalent expression. He listed the properties in the order that he used
Step
I
Property Used
Associative
Distributive
2
Addition
Which steps match the properties used?
15+777-6 + 32
= 7n2+ 3+ 15-8
C (743)n+ 15-8
10/7+7
12n+ 2(417+ 2)

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