Question

100 POINTS HELP

Mathmatics Middle School
Which of the students used the associative property to simplify the expression? Select all that are true. Student 2 Student 1 Student 3 None of the students

Student 1: 5 - 2(4 + 9) - 11
5 - 2(4) - 2(9) -11
5 - 8 - 18 -11
5 + (-8) + (-18) + (-11)
-3 + (-18) + (-11)
-21 + (-11)
-32
Student 2: -9 + (6 + 9) - 42
-9 + (9 + 6) - 42
(-9 + 9) + 6 - 42
0 + 6 - 42
0 + 6 - 16
0 + 6 + (-16)
6 + (-16)
-10
Student 3: -4(14) - 32 - 2 ∙ 0
-4(10 + 4) - 32 - 2 ∙ 0
-4(10) - 4(4) - 32 - 2 ∙ 0
-40 - 16 - 32 - 2 ∙ 0
-40 - 16 - 9 - 2 ∙ 0
-56 - 9 - 2 ∙ 0
-65 - 2 ∙ 0
-67 ∙ 0
0

Answer 1

Associative property is given by

• a+(b+c)=(a+b)+c

Let's check the properties used by the students

#1

2(4+9)=2(4)+2(9)

• Distributive property

#2

Mark the no 3

• Associative property

#3

No

• Distributive property