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Find the 20th term in the following arithmetic sequence : 12, 15, 18, 21, ... Hint: Write a formula to help you. 1st term + common difference(desired term - 1)
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3 votes
Find the 20th term in the following

arithmetic sequence :
12, 15, 18, 21, ...
Hint: Write a formula to help you.
1st term + common difference(desired term - 1)

User Andrew Park
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1 Answer

4 votes
Y= 9+3x this is ur formula u just go back 3 and that is 9 and then ur 3 if from adding up so that’s 3 times ur x then should equal y
User David Mohundro
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