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faust18 [17]
4 years ago
7

I need help with this magic number puzzle

Mathematics
1 answer:
Delicious77 [7]4 years ago
7 0
You need a better camera

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Y^3-27=9y^2-27y how to factor
Kryger [21]
Hello! And thank you for your question!

First we are going to redo the equation:

<span><span><span>y<span><span>​^3</span><span>​​</span></span></span>−3<span>y^<span><span>​2</span><span>​​</span></span></span>(3)+3(y)×<span>3<span><span>​^2</span><span>​​</span></span></span>−<span>3<span><span>​^3</span><span>​​</span></span></span>=0

Then we are going to use Cube of Difference:

0 = (y - 3)^3

That take cube root of both sides:

0 = y - 3

Finally add 3 to both sides:

3 = y

Final Answer:

y = 3</span></span>
4 0
3 years ago
Help please I’m not sure what do do with these kind of problems
telo118 [61]

Answer:

c

Step-by-step explanation:

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I want to say answer (A)is the correct answer

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Solve 3(x+1) -2x= -6
s2008m [1.1K]
3(x + 1) - 2x = -6    |use distributive property: a(b + c) = ab + ac

3x + 3 - 2x = -6

x + 3 = -6    |subtract 3 from both sides

x = -9
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On his way to work, a man notices that 9 of the 16 traffic lights are green. Is there statistical significance to say that these
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Yes because the results are unlikely to occur by chance, is what I think .
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