Asked by jessica
hi so i am stuck at this question that is asking about arithmetic sequence .
Five fence posts are equally spaced between two corner posts that are 42 meter apart. how far apart are the five fence posts.
i know the answer is 7m but i don't know how plus i know the equation for the arithmetic sequence is
tn=t1(n-1)d, but how does it apply to this question?
Five fence posts are equally spaced between two corner posts that are 42 meter apart. how far apart are the five fence posts.
i know the answer is 7m but i don't know how plus i know the equation for the arithmetic sequence is
tn=t1(n-1)d, but how does it apply to this question?
Answers
Answered by
jaykim
a=0(starting from a corner pole1) no of poles=n=72 t7=42(corner pole 2) d=spacing 42=0+d(7-1) 6d=42 d=7m
Answered by
Damon
There are 7 posts including the two end ones.
That means six equal spaces between posts
42/6 = 7 meters
(note, number of spaces = number of posts - 1)
That means six equal spaces between posts
42/6 = 7 meters
(note, number of spaces = number of posts - 1)
Answered by
jessica
oh my god thank you i makes sense now
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