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alisha [4.7K]
3 years ago
7

Trisha is going to make a border of icing around a circular cake with a diameter of 8 inches which of the following represents t

he amount of icing Trisha will need? A.12.56, B.25.12, C.18.62, D.50.24
Mathematics
1 answer:
nadya68 [22]3 years ago
4 0

Answer:

B. 25.12

Step-by-step explanation:

We are simply finding the perimeter of the cake.

Perimeter: π × diameter

Perimeter: 3.14 × 8

Perimeter: 25.12 inches

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Or maybe it's not periodic, and every seventh value in the sequence is incremented by 1? Who knows?

I'll go ahead and assume the latter case, that the sequence is not periodic, since that's technically somewhat easier to manage. We can assign the following rule to the n-th term in the sequence:

\{a_n\}=\{-1,\ldots,-1,0,\ldots,0,1,\ldots,1,2,\ldots,2,3,\ldots\}
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So the generating function for this sequence might be

G(a_n;x)=\displaystyle\sum_{n\ge0}\left(\left\lfloor\frac n7\right\rfloor-1\right)x^n

As to what is meant by "closed form", I'm not sure. Would this answer be acceptable? Or do you need to find a possibly more tractable form for the coefficient not in terms of the floor function?
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3 years ago
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asambeis [7]

<span>the question does not present the picture, but this does not interfere with the resolution</span>

we know that
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drek231 [11]

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Step-by-step explanation:

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Answer:

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