Find the first 3 terms of arithmetic sequence if t5=-154 and t9=-274. find t1, t2, t3

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Find the first 3 terms of arithmetic sequence if t5=-154 and t9=-274. find t1, t2, t3

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Dâu 1 year 2021-09-03T15:42:21+00:00 1 Answers 6 views 0

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  1. Giakhanh
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    2021-09-03T15:43:23+00:00
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    Answer: t1 = -34; t2 = -64; t3 = -94

    d is the distance between numbers (d > 0)

    we have:

    t5 = t1 + 4d = -154

    t9 = t1 + 8d = -274

    we have the equations:

    t1 + 4d = -154

    t1 + 8d = -274

    <=> t1 = -34

          d = -30

    with t1 = -34 and = -30 => t2 = -34 – 30 = -64

                                              t3 = -64 – 30 = -94

    Step-by-step explanation:

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