1.Which property justifies the statement if y=7 then 7=y? A. reflexive property
B. identity property
C. symmetric property
D. transitive property
2.Which set of number is closed under subtraction
A. Natural number
B. Integer
C. Irrational number
D. odd numbers
3. Which property justifies the statement (a-b)*0=0
A. Inverse property
B. Associative property
C. Distributive property
D. zero product property

1. option C, i.e., symmetric property.

2. option B, i.e., Integer

3. option D, i.e., zero product property

Step-by-step explanation:

Symmetric property: According to this property it a=b the b=a.

By symmetric property, we can say that, if y=7 then 7=y.

Therefore, the correct option is C, i.e., symmetric property.

Closure property: According to this property, if a∈S and b∈S, then a*b∈S.

Subtraction of natural numbers is not always natural.

Subtraction of integers is always integer.

Subtraction of irrational number is not always irrational number.

Subtraction of odd number is always even.

Therefore, the correct option is B, i.e., Integer.

Given statement is (a-b)*0=0.

According to zero product property if ab=0, then a=0 or b=0.

So, the given statement is true by zero product property.

Therefore, the correct option is D, i.e., zero product property.

step-by-step explanation:

hans did not square the 40-unit side; he merely multiplied it by 2.   incorrect.

in the math equation 8 x 7 = 56, the 8 and the 7 are both factors of 56, since in this lesson we will use square tiles to figure out the factors of a whole find as many different arrays as you can, but follow one important rule: all the rows must have the i can make two rows of nine, so 2 and 9 are both factors of 18.

step-by-step explanation: