Find the first term a1 and the common difference d, for the arithmetic sequence. A2=18,a43=469

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asked Jul 26, 2024 162k views

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Find the first term a1 and the common difference d, for the arithmetic sequence.
A2=18,a43=469

Mathematics
college

Rubioli asked

by Rubioli

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1 Answer

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Answer:

Hi,

Explanation:

$A_2=A_1+d=18\\A_(43)=A_1+42*d=469\\\\42*d-d=469-18\\41*d=451\\d=(451)/(18) \\\\d=11\\\\A_1=A_2-d=18-11=7\\$

Mattew Eon answered Aug 1, 2024

by Mattew Eon

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