Answer: The correct option is 4th, i.e.,identity property of multiplication.
Explanation:
It is given that [tex]-2.1\times 1=-2.1[/tex]
correct option is identity property of multiplication.
Reason for correct option:
The identity property of multiplication states that if a real number multiplied by 1, then we gtet the same number.
[tex]a\times 1=a[/tex]
In the given equation -2.1 is multiplied by 1 and we get -2.1.
Reason for incorrect option:
It the given equation 1 is multiplied by -2.1, So the multiplication property of -1 is not used and first option is incorrect.
The given equation is a problem of multiplication, so identity property of addition is an incorrect option.
The inverse property of multiplication property states that the multiplication of a real number and its inverse is 1.
[tex]a\times b=1[/tex]
Since we don't have 1 on another side, so inverse property of multiplication is an incorrect option.
