Which of the following demonstrates the
additive identity:
a. 5*1=5
5. 3+5=5+3
c. 4+ (6 + 8) = (4+6) +8
d. 9 + 0 = 9

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absor201 absor201 · Answer 1 · 2019-11-04T16:41:36+01:00

The correct answer is d. 9 + 0 = 9

Further explanation:

If x is an element of a set, and adding a number to it doesn't change it i.e. the result is also x then the number is called additive identity.

In mathematics, 0 is considered as additive identity because no matter with which number it is added, the number always remains same.

In the given options:

Option a. 5*1=5 demonstrates multiplicative identity

Option b. 3+5=5+3 demonstrates commutative property

Option c. 4+ (6 + 8) = (4+6) +8 demonstrates associative property

While the last option

d. 9 + 0 = 9 demonstrates additive identity as zero is being added to 9 and the answer is also 9.

The correct answer is d. 9 + 0 = 9

Keywords: Identities, Properties

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