Question

MATHEMATICS 8
12 ) Which of the following is an example of Commutative Property w.r.t.
Addition ?
A. 5 + 9 = 9 +5
B. (9+ 2) + 8 = 9+ (2+8)
C. 4+ 7 = 3 + 4
D. 6 x1 = 6
13 ) Which property is used in the following expression?
9(8 + 3) = 72 +27
A. Commutative Property w.r.t. Addition
B. Associative Property w.r.t. Addition
C. Distributive Property
D. Associative Property w.r.t. Multiplication
14) Which of the following does not show the Commutative Property?
A. xy - 7 = xy
B. 9+ y = y +9
C. yx = xy
D. x + y = y + x
15) Which property is used in the following expression?
(a * b) x c= a × b × c)
A. Commutative Property w.r.t. Addition
B. Associative Property w.r.t. Addition
C. Distributive Property
D. Associative Property w.r.t. Multiplication
16 ) Which property would you use to simplify the following expression?
3(y+5)
A. Distributive Property
B. Multiplication Property of Zero
C. Commutative Property
D. Associative Property
17) Which Property of Multiplication is shown?
(4 + 7) x 8 = 4 * 8+7 x 8
A. Commutative Property
B. Identity Property
C. Associative Property
D Distributive Property​

Answer 1

I'm not sure

Step-by-step explanation:

12.a

13.b

14.a

15d

16.d

17.d