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nlexa [21]
3 years ago
5

Which ones are not functions

Mathematics
1 answer:
valina [46]3 years ago
5 0

Answer:

1,2,3,7

a function can only have one y for every x

the first 3 have multiple y values for a single x value as well as the seventh one has 2 y values for that one x value

(first 3 on top not functions, 3rd one on the bottom also not a function)

Step-by-step explanation:

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frez [133]

Answer:

$42.30

Step-by-step explanation:

3 0
3 years ago
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Factor the expression completely over the complex numbers: 25x2 +144
Paha777 [63]

Answer:

25x² + 144 = (5x + 12i) (5x - 12i).

Step-by-step explanation:

We have to factorize the expression 25x² + 144, using the complex number.

Now, i = \sqrt{- 1} can be treated as the complex number as there is negative value with in square root.

So, i^{2} = - 1

Therefore, we can write the original expression as  

25x² + 144

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= (5x)² - (12i)²

= (5x + 12i) (5x - 12i)

So, the factorization is 25x² + 144 = (5x + 12i) (5x - 12i). (Answer)

5 0
3 years ago
Find the measure of ∠3.<br><br> a. 118<br> b. 62<br> c. 31
JulijaS [17]

<em>answer = 62 \\ solution \\  \: let \:   < 3 \: be \: x \\ x  + 118 = 180(sum \: of \: angle \: in \: triangle) \\ or \: x = 180 - 118 \\ x = 62 \\ hope \: it \: helps \\ good \: luck \: on \: your \: assignment</em>

7 0
4 years ago
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Write down the solution set for x&lt;3 in the set of natural numbers.
Gre4nikov [31]

Answer:

domain:{ [3, ∞], int}

Step-by-step explanation:

this is every possible number that is an integer, so domain:{ [3, ∞], int}

note that the format may be different

4 0
3 years ago
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The product of 7 and a number is 126. Find the number
fenix001 [56]

Answer:

18

Step-by-step explanation:

Product of 7 and a number is 126.

Let's form the equation,

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The required value of x will be,

→ 7 × x = 126

→ x = 126/7

→ [ x = 18 ]

Hence, the number is 18.

6 0
2 years ago
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