if the nth term of an arithmetic sequence is 5n-7 what is the sum of its 5 terms
(Hint: Find a1 and a5, then use the formula n/2 (a1 + an).)
(Hint: Find a1 and a5, then use the formula n/2 (a1 + an).)
Copyright © 2024 EHUB.TIPS team's - All rights reserved.
Answers & Comments
Answer:
The sum of n terms of AP is the sum(addition) of first n terms of the arithmetic sequence. It is equal to n divided by 2 times the sum of twice the first term – 'a' and the product of the difference between second and first term-'d' also known as common difference, and (n-1), where n is numbers of terms to be added