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LenaWriter [7]
2 years ago
15

(143(5) + 67)5-----------Anybody???:)

Mathematics
1 answer:
Vikentia [17]2 years ago
6 0
<span>(143(5) + 67)5
Multiply 143 by 5
(715 + 67)5
Add the numbers inside the parenthesis(715 and 67).
(782)5
Multiply 782 by 5.
Final Answer: 3,910</span>
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the first term of an arithmetic sequence is -27. the common difference of the sequence is 6. What is the sum of the first 30 ter
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Answer:

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Step-by-step explanation:

The sum to n terms of an arithmetic sequence is

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Here a₁ = - 27 and d = 6, thus

S_{30} = \frac{30}{2} [ (2 × - 27) + (29 × 6) ]

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     = 1800

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