Description
Explanation & Answer
Thank you for the opportunity to help you with your question. I will try my best to answer your queries below -
1) 5+8+11+ .... +269 = ?
Let's first figure out the number of terms in the sequence
An = A1 + (n-1)*d
269 = 5 + (n-1)*3
n = 89
Sum of the sequence can be given as -> S = n (A1 + An)/2
S = 89* (5+269)/2 = 12193 Answer
2) The given sequence can be written as -
9 + 5 +1 + .............. + (-451) = ? (We got this series by simply replacing the value of K from 1 to 116 in the given summation expression)
Let's first figure out the number of terms in the sequence
An = A1 + (n-1)*d-451 = 9 + (n-1)*(-4)
n = 116
Sum of the sequence can be given as -> S = n (A1 + An)/2
S = 116* (9+(-451))/2 = -25636 Answer
Please let me know if you need any clarification. I'm always happy to answer your questions.
Review
Review
24/7 Homework Help
Stuck on a homework question? Our verified tutors can answer all questions, from basic math to advanced rocket science!
Similar Content
Related Tags
Bridge to Terabithia
by Katherine Paterson
The Bell Jar
by Sylvia Plath
The Two Towers
by J. R. R. Tolkien
The Goldfinch
by Donna Tartt
The Calcutta Chromosome
by Amitav Ghosh
The House of the Seven Gables
by Nathaniel Hawthorne
The Road
by Cormac McCarthy
Anthem
by Ayn Rand
Blink
by Malcolm Gladwell