7. Determine the sum of the arithmetic series using a formula: 11 +19+27+ ... + 163.

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter9: Sequences, Probability And Counting Theory
Section: Chapter Questions
Problem 23RE: Use the formula for the sum of the first ii terms of an arithmetic series to find the sum of the...
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7. Determine the sum of the arithmetic series using a formula: 11 +19+27+ ... + 163.
8. Determine the sum of the arithmetic series when t₁ = -6, d = 4, and n = 50.
9. How many terms of the arithmetic sequence 15, 12, 9, ... must be added together to get a sum of -39?
10. Given that an arithmetic sequence has a sixth term equal to 27, and the sum of the first twelve terms is equal to 504, determine:
a.) the first term and the common difference for the arithmetic sequence.
b.) the 8th term.
c.) the sum of the first seventeen terms.
d.) n, if t₂ = 357.
Transcribed Image Text:7. Determine the sum of the arithmetic series using a formula: 11 +19+27+ ... + 163. 8. Determine the sum of the arithmetic series when t₁ = -6, d = 4, and n = 50. 9. How many terms of the arithmetic sequence 15, 12, 9, ... must be added together to get a sum of -39? 10. Given that an arithmetic sequence has a sixth term equal to 27, and the sum of the first twelve terms is equal to 504, determine: a.) the first term and the common difference for the arithmetic sequence. b.) the 8th term. c.) the sum of the first seventeen terms. d.) n, if t₂ = 357.
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