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julia-pushkina [17]
3 years ago
5

If a(n)=24 which recursive formula could represent the sequence below? ...,24,88,664,8408,...

Mathematics
1 answer:
sesenic [268]3 years ago
3 1
24= 3*2^3  
88= 11*2^3
664= 83*2^3 -> 83=11+72 = 11 + 2^3*3^2
664=2^3 (11+2^3*3^2) = 88 +(2^3*2^3*3^2) = 88 +(24^2)

8408= 1051 * 2^3 -> 1051= 83+968 -> 968 = 2^3 * 11^2
8408= 2^3 (83+2^3*11^2) = 664 +(2^3*2^3*11^2) = 664 +(88^2)

So: 
a(n) = a(n-1) + a(n-2)^2

Lets check: 88+24^2= 664
664+88^2= 8408


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3 years ago
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Answer: (60.858, 69.142)

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The formula to find the confidence interval for mean :

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Let x represents the time taken to mail products for all orders received at the office of this company.

As per given , we have

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z-value for 93% confidence interval: z_c=1.8119  [using z-value table]

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Thus , 93% confidence the mean time taken to mail products for all orders received at the office of this company : (60.858, 69.142)

8 0
3 years ago
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