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Alisiya [41]
3 years ago
14

The length of a pool table is 71 feet and the width is 36 feet. Find the area of the surface of the pool table by multiplying th

e length by the with
(20 points)​
Mathematics
1 answer:
Zarrin [17]3 years ago
5 0

Answer:

2556 feet squared

Step-by-step explanation:

Area is calculated by multiplying length times width. 71x36=2556

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Deffense [45]
Correct answer is option D.

The solution is listed below

F(x)=4x+7 \\  \\ 
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f-^{1}(y) = \frac{y-7}{4} \\  \\ 
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By iteratively substituting, we have

a_n = a_{n-1} + n

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a_{n-2} = a_{n-3} + (n - 2) \implies a_n = a_{n-3} + n + (n - 1) + (n - 2)

and the pattern continues down to the first term a_1=0,

a_n = a_{n - (n - 1)} + n + (n - 1) + (n - 2) + \cdots + (n - (n - 2))

\implies a_n = a_1 + \displaystyle \sum_{k=0}^{n-2} (n - k)

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\displaystyle \sum_{n=1}^N 1 = N

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It follows that

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\implies a_n = \dfrac12 n^2 + \dfrac12 n - 1

\implies \boxed{a_n = \dfrac{(n+2)(n-1)}2}

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2 years ago
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