Mathematics, 15.07.2019 07:30, hjohnere1
The first row of a section in a concert hall has 20 seats. the second row has 21 seats. the third row has 22 seats. this pattern continues and this section has 12 rows. how many seats are in this section?
Answers: 1
is the nth termn, 
is the first term, 
is the common difference between the terms and 
is the number of the term.
seats
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The first row of a section in a concert hall has 20 seats. the second row has 21 seats. the third ro...
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