Which sentence demonstrates the multiplicative identity? a: 1/2•2=1 b: 1/2•1=1/2 c: 1/2+0= 1/2

(B)

Step-by-step explanation:

A multiplicative identity is the property in which when a number is multiplied with one (1), the number remains unchanged.

Thus, (A) The given sentence is :

This sentence does no undergo multiplication with 1, therefore, this option does not demonstrates the multiplicative property, hence this option is incorrect.

(B) The given sentence is:

This sentence undergoes multiplication with 1 and gives the unchanged number, thus this option demonstrates the multiplicative identity, hence this option is correct.

(C) The given sentence  is :

The given expression undergoes addition, thus this option is incorrect.

$4

step-by-step explanation:

$30×5=$150

$150 minus $130=$20

$20÷5=$4.

hope to and hope that my answer is brainliest.(follow me )

12r - 8 - 12

you have to combine like terms. below i have bolded the like terms:

12r - 8 - 12

together it combines to:

12r - 20

hope this !