Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
|
2 Answers Below
Anyone can contribute an answer, even non-tutors.
The answer is 27. But i dont know what the formula should i use and how to do. Please explain me by step
Date Posted: 6 years ago
Views: 624
See 2 Answers
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
a = 26, d = -2
Sn = n/2[2(26) + (n-1)(-2)] = 0
.
.
.
=> n² - 27n = 0
.
.
.
=> n = 0 (n.a.) or n = 27
ans: n = 27
Sn = n/2[2(26) + (n-1)(-2)] = 0
.
.
.
=> n² - 27n = 0
.
.
.
=> n = 0 (n.a.) or n = 27
ans: n = 27
Date Posted:
6 years ago
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
hope it helps! feel free to ask if I were unclear
Date Posted:
6 years ago
360 Tutoring Program