a. 4 – commutative property
b. 5 – commutative property
c. 0 – identity property
d. 4 – associative property
_____
The commutative property lets you swap the order: (a) + (b) = (b) + (a).
The associative property lets you change the grouping: (a+b)+c = a+(b+c).
The identity property lets you add 0 without changing anything: (a) +0 = (a).
Answer:

Step By Step Explanation:
Remove Parenthesis: (a) = a

Simplify 

Rewrite Equation:

Simplify 

- Mordancy
24 different ways can they line up to receive their championship rings.
What is a permutation mean in math?
- When the order of the arrangements matters, a mathematical technique called a permutation can be used to calculate the number of alternative arrangements in a collection.
- Common mathematics problems involve choosing only several items from a group of items in a specified sequence.
What are permutations used for?
- When an arrangement requires an order or a sequence, permutations are used.
- Combinations are employed when determining merely the number of potential groups is required and neither the order nor the sequence of arrangements is necessary.
Given,
No. of captains of the football team = 4
So,
4 ways we can line up their championship rings = (4,4)
4 ×3 ×2 ×1 = 24
Therefore, 24 different ways can they line up to receive their championship rings.
Learn more about permutation
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35×3=105 with 5 left over
So it would be 4 group
3 groups of 35 and 1 group of 5
So it would be 4 groups
Step-by-step explanation: