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Debora [2.8K]
3 years ago
8

What causal link can be inferred from this statement? As weather conditions change, birds migrate from one region to another for

breeding.
Weather changes cause birds to breed.
Weather changes cause bird migration.
Migrating birds cause weather changes.
Breeding birds cause weather changes.
Bird breeding causes bird migration.
Mathematics
2 answers:
Olin [163]3 years ago
8 0
<span>Weather changes cause bird migration.</span>
gtnhenbr [62]3 years ago
7 0

B weather changes cause bird migration


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Answer:

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Step-by-step explanation:

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kirill [66]

Answer:

  a(x)=\dfrac{1}{1+2x}

Step-by-step explanation:

The generating function a(x) produces a power series ...

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where the coefficients are the elements of the given sequence.

We observe that the given sequence has the recurrence relation ...

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This can be rearranged to ...

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We can formulate this in terms of a(x) as follows, then solve for a(x).

\sum\limits^{\infty}_{n=1} {a_{n}x^n} =a(x)-a_0 \quad\text{and}\\\\\sum\limits^{\infty}_{n=1} {2a_{n-1}x^n} =(2x)a(x) \quad\text{so}\\\\\sum\limits^{\infty}_{n=1} {(a_n+2a_{n-1})x^n}=0=a(x)-a_0+2xa(x)\\\\a(x)=\dfrac{a_0}{1+2x}=\dfrac{1}{1+2x}

The generating function is ...

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Okay, first, given the equation, we need to find out what the radius of the circle is. Let us state the general equation of a circle: 

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Where (x_{1}, y_{1}) is the centre of the circle. In this case, we don't need to know the centre. Just the radius. 

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Now we insert our radius. 

A=9^2π 

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You can convert that into a decimal if you wish. 

Hope this helped!

~Cam943, Moderator
4 0
3 years ago
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Answer:

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