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Slav-nsk [51]
3 years ago
14

Is this shape a polygon?

Mathematics
2 answers:
Allushta [10]3 years ago
8 0
No its not  polygons dont cross lines 

Varvara68 [4.7K]3 years ago
8 0
No, it crosses itself.
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Determine the values of x when f(x)=40 for the function f(x)=2(x-3)^2-8
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Answer:

x = 3 ± \sqrt{24}

or

x = 3 + \sqrt{24}, x = 3 - \sqrt{24}

Step-by-step explanation:

given f(x) = 2(x - 3)^2 - 8, find when f(x) = 40

So, we plug in 40 for f(x) in the 1st equation and solve for x.  (Aim to got x on its own)

40 = 2 (x - 3)^2 - 8

+ 8          + 8

-----------------------------

48 = 2 (x - 3)^2

/2            /2

-----------------------------

24 = (x - 3)^2

square root both sides

--------------------

\sqrt{24} = x - 3

x = 3 ± \sqrt{24}

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