The algebraic form of an arithmetic sequence is 5n+4.
1. What is its first term?
2. What is the difference of its 10th and
20th term?
3. Can the difference of any two terms
of the sequence be 368?
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Answer:
the first term is 4
10 th term = a + (n-1) d = 4+ (10 -1)5 =4+45 =49
20 th term = 4 + (20-1) 5 = 4 +95 =99
difference of 10 th and 20th term = 99-49 =50
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