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Ludmilka [50]
1 year ago
5

PLEASE HELP ME ( I WILL MARK BRAINLIEST )

Mathematics
1 answer:
AlekseyPX1 year ago
8 0
The numbers are 15, 17 and 19
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Determine the axis of symmetry and the vertex of the given function.<br> y = 2x2 - 12x + 21
mestny [16]

Answer:

the vertex is ( 3 , 3)

Symetric axis‘s equation: x = 3

Step-by-step explanation:

Let‘s name the function ” f ”

f(x) = y = 2x² - 12x + 21

the vertex has coordinates of ( -b/2a , f(-b/2a) )

-b/2a = 12/2(2) = 12/4 = 3

f(-b/2a) = f(3) = 2(3)² - 12(3) + 21 = 3

then the vertex is ( 3 , 3)

the symetric axis has the equation :

x = -b/2a

then

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2 years ago
Is a vertical line a function
topjm [15]

Answer:

No

Step-by-step explanation:

Explanation 1)A vertical line can be represented by the equation x=a, where a can be any number. If you think about it, there is no y in the function, this making it not a function.

Explanation 2) For a line to be a function it has to pass the vertical line test, so you will draw a vertical line through the function and if it touches more than one point then it is not a function. In this case if you draw a vertical line through a vertical line there are an infinite number of places where the lines intercept, so it is not a function.

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2 years ago
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I want to subscribe to Brainly
valina [46]

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lubasha [3.4K]
Yes it is a function, it passes the straight line test
5 0
2 years ago
How do I do this help me please
Dmitrij [34]

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The answer is 3x.

Step-by-step explanation:

I broke it down on paper.

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