What is the first term of the fibonacci like sequence whose second term is 4 and whose fith term is 22?

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What is the first term of the fibonacci like sequence whose second term is 4 and whose fith term is 22?

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Latifah 3 years 2021-09-05T03:32:10+00:00 1 Answers 33 views 0

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  1. Dulcie
    0
    2021-09-05T03:33:31+00:00
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    Answer: -2

    Step-by-step explanation:

    The information in the question can be used to form an equation which goes thus:

    2nd term = a + d = 4 …… i

    5th term = a + 4d = 22 ……. ii

    From equation i

    a = 4 – d …….. iii

    Put equation iii into ii

    a + 4d = 22

    (4 – d) + 4d = 22

    4 – d + 4d = 22

    4 + 3d = 22

    3d = 22 – 4

    3d = 18

    d = 18/3

    d = 6

    Commons difference is 6

    Since a + d = 4

    a + 6 = 4

    a = 4 – 6

    a = -2

    The first term is -2

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )