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hoa [83]
3 years ago
15

Help please

Mathematics
1 answer:
Y_Kistochka [10]3 years ago
7 0
The first term is a(1) = -3
The recursive step is a(n) = a(n-1)+7 meaning "add 7 to each previous term to get the next term". This points us to the common difference d being 7

a1 = -3 
d = 7

an = a1 + d(n-1)
an = -3 + 7(n-1)
an = -3+7n-7
an = 7n-10

Answer: a_{n} = 7n-10 (it says an = 7n-10 if the image doesn't show up)
Note: the n starts at n = 1
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Answer:

14,15,16

Step-by-step explanation:

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Combine like terms

3x+3 = 45

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3x+3-3=45-3

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x =14

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pashok25 [27]

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