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zubka84 [21]
3 years ago
14

Help help help help pls​

Mathematics
2 answers:
Butoxors [25]3 years ago
4 0

Answer:

A

Step-by-step explanation:

A function is any relation for which an input does <em>not</em> equal two different outputs. For instance, if a set contains (1, 1) and (1, 2), then the set is not a function. However, a set that contains (1,1) and (1,1) is a function because it's the same thing. In other words, the x-coordinate cannot repeat. If it does, it must equal to same thing.

For W, none of the x-coordinates are repeated. Thus, W is a function.

Similarly, for X, none of the x-coordinates are repeated either. X is a function.

Again, for Y, none of the x-coordinates are repeated. Y is a function.

Lastly, for Z, the same thing. None of the x-coordinates are repeated, so Z is a function.

Thus, all choices are a function. The answer is A.

NikAS [45]3 years ago
3 0

Answer:

A. all of them

Step-by-step explanation:

In a function, every x in a (x,y) pair can have only one distinct y value.

This seems to be the case in the given sets of pairs.

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On simplifying the expression 13.8+ (-11.5) , we get 2.3 . And additions

13.8 + (-11.5) and (-13.8) +  11.5 are numbers will same value and opposite sign.

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For adding a negative and a positive number, use the sign of the larger number and subtract.

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Given that we have to solve 13.8 + (-11.5) = 13.8-11.5 (we subtract smaller no from larger and will use the sign of lager number that is + here)

13.8+(-11.5) = 13.8-11.5 =2.3

13.8+(-11.5) simply means that 13.8 -11.5 which is subtraction of 11.5 from 13.8

but (-13.8) +  11.5 = -13.8 +11.5  =  -( 13.8 -11.5) [taking -1  common from the expression]

Therefore , -13.8 + 11.5 has same value as 13.8- 11.5 but opposite  in sign.

Learn, More about addition of numbers from here:'

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