Find the common difference and the three terms in the sequence given -25, -35, -45, -55,...

hifadhinitz 2022-09-06 Answered
Find the common difference and the three terms in the sequence given -25, -35, -45, -55,...
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Answers (1)

oldgaffer1b
Answered 2022-09-07 Author has 9 answers
The common difference is the difference between any two consecutive terms in an arithmetic sequence.
You can find it by subtracting any term from the next term.
For example: d = T 4 - T 3 . Or in general T n - T n - 1
d = - 55 - ( - 45 ) = - 10
This agrees with what we can see that the terms are getting smaller, with a difference of 10 every time.
- 25 + ( - 10 ) = - 35 . . e t c
It is not clear which three terms are being asked for.
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