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16-02-2021
Mathematics

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In an arithmetic sequence, U2= 5 and U3= 11.
Find the common difference.

Find the first term.

Find the sum of the first 20 terms.

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wenrenyou wenrenyou

18-02-2021

Answer:

Common difference:11

first term: 5

sum of the first 20 terms= 84

Step-by-step explanation:

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