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3 years ago

How do I write an explicit formula for this sequence? 2, 6, 18, 54, 162, ... I already know the common difference is x3.

Mathematics

1 answer:

uranmaximum [27]3 years ago

6 0

If the common difference is 3 all you need to do is:
an=a1 - d(n-1)
2 - 3d + 3
Explicit rule = -3n + 5

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Answer:

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3 years ago

Need help solving this

Kobotan [32]

Answer:

A^C = {2,3,5,6,10,12,14,15,17,18,20}

B^C = {1,3,5,6,9,11,15,16,18,20}

C^C = { 5,9,10,15,16,20}

Step-by-step explanation:

The C means the complement or the items in the main set and not in the subset

Given U = {1,2,3,4,5,......18,19,20}

A^C = means the items in U that are not in A

A^C = {2,3,5,6,10,12,14,15,17,18,20}

B^C = means the items in U that are not in B

B^C = {1,3,5,6,9,11,15,16,18,20}

C^C = means the items in U that are not in C

C^C = { 5,9,10,15,16,20}

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3 years ago

Help!!!!!!!!!!!!!!!!!!!!!

Sonja [21]

N = 72
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3 years ago