if 3x+k 2x+9 x+13 are three consecutive terms of an ap fine k

Question

if 3x+k 2x+9 x+13 are three consecutive terms of an ap fine k

in progress 0
Eirian 4 years 2021-08-27T07:37:27+00:00 1 Answers 85 views 0

Answers ( )

  1. Ben
    0
    2021-08-27T07:38:40+00:00
    Reply

    Step-by-step explanation:

    Since there are in arithmetic progression, 2(2x + 9) = (3x + k) + (x + 13).

    => 4x + 18 = 4x + 13 + k

    Hence k = 5.

Leave an answer

Browse

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