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Elden [556K]
2 years ago
13

the sum of the 10th and 11th terms of an arithmetic sequence is 65 what is the sum of its first 20th terms​

Mathematics
1 answer:
Dmitriy789 [7]2 years ago
6 0

Answer:

this is the answer

Step-by-step explanation:

a 65

b 650

c 52

d 3

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