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Natalka [10]
3 years ago
7

Explain what is the 7th term in the geometric sequence described by this explicit formula? A.-2187 B.6561 C.-6561 D.2187

Mathematics
1 answer:
Shtirlitz [24]3 years ago
5 0

Answer:

the answer is d

Step-by-step explanation:

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Can someone please help me I really need help please please help me
Len [333]

Answer:

p= -3d-6

Step-by-step explanation:

I think this is right because he's eating 3 pieces each day after which would be -3d and d represents the amount of days, and the -6 represents the 6 pieces of candy he ate on his birthday. Hope this helps!

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Find an equation in standard form for the hyperbola with vertices at (0, ±3) and foci at (0, ±7)
Nitella [24]

The equation of a hyperbola is:

(x – h)^2 / a^2 - (y – k)^2 / b^2 = 1

 

So what we have to do is to look for the values of the variables:

<span>For the given hyperbola : center (h, k) = (0, 0)
a = 3(distance from center to vertices)
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<span>
c = 7 (distance from center to vertices; given from the foci)
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<span>By the hypotenuse formula:
c^2 = a^2 + b^2
b^2 = c^2 - a^2 </span>

<span>b^2 =  49 – 9</span>

<span>b^2  = 40

</span>

Therefore the equation of the hyperbola is:

<span>(x^2 / 9) – (y^2 / 40) = 1</span>

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3 years ago
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Artemon [7]
I think the answer is b 
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Based on the data, is there a clear association between having been on an airplane and having visited another country?
Roman55 [17]

Answer:

If you have exited the country, you most likely took a plane. Therefore yes there is an association between having been on a airplane and visiting another country.

(Also do u go to CCA? Bc I had the same q on my math quiz in Mrs.Pfeiffer's class)

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Is square root of 100 irrational or rational?
viva [34]
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