Question

http://prntscr.com/bct0ih

Which reason describes statement 4 in the proof?


A.Distributive Property


B.Associative Property of Multiplication


C.Commutative Property of Multiplication


D.Identity Property of Multiplication

Answer 1

What are your thoughts? Any choices obviously wrong?

Answer 2

I think its commutative

Answer 3

D and A are wrong

Answer 4

@mjdennis

Answer 5

A and D are indeed wrong.
The wolfram alpha site says that "the commutative property of multiplication states that two numbers can be multiplied in either order". I don't see the order change in step 4, what I see are that the groupings change, which variable _associate_ with which.

Answer 6

They made a typo on step 4. The 'c' in the red box should be a 'b'

Answer 7

@jim_thompson5910 Weird! It is showing b now http://prntscr.com/bcuh69

Answer 8

hmm that is bizarre