Answers

2016-07-09T18:12:13+08:00
If x=3

x+2=5    4x+5=17    and 3x+2=11

so 5,11, 17 is the sequence with the common difference of 6
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  • Brainly User
2016-07-09T18:38:02+08:00
The sequence:  x+2, 3x+2, 4x+5

Solution:

  x+2  +  4x+5
-----------------  = 3x + 2
        2

5x + 7 = (3x + 2) (2)

5x + 7 = 6x + 4

6x - 5x = 7 - 4

x = 3 ⇒  ANSWER

Plug-in 3 to x:

x + 2 = 3 + 2 = 5

3x + 2 = 3(3) + 2 = 11

4x + 5 = 4(3) + 5 = 17

The arithmetic sequence is 5, 11, 17.
The common difference is 6.
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