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Find the 57th term of the arithmetic sequence -13,-29,-45,…

Find the 57th term of the arithmetic sequence -13,-29,-45,…
asked 171k views
3 votes
Find the 57th term of the arithmetic sequence -13,-29,-45,…

asked
User Cgbystrom
by
8.2k points

1 Answer

6 votes

Answer:

hi,

-909

Explanation:

Formula to use:
a_(n+1)=a_1+n*r

First term=-13

Commun difference=
a_2-a_1


a_1=-13\\r=-29-(-13)=-16\\\\\\a_(57)=a_1+(57-1)*r=-13+56*(-16)=-909\\

answered
User Michala
by
7.9k points
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