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23 April, 08:51

Which number is NOT in the solution set of x - 9 > 3?

A) 11

B) 13

C) 15

D) 17

+3
Answers (2)
  1. 23 April, 10:14
    0
    A) 11.

    Step-by-step explanation:

    x - 9 > 3 Add 9 to both sides:

    x > 3 + 9

    x > 12.

    The only number in the list that is not greater than 12 is 11.
  2. 23 April, 12:00
    0
    A

    Step-by-step explanation:

    Given

    x - 9 > 3 (add 9 to both sides)

    x > 12

    13, 15 and 17 are all greater than 12

    However, 11 is less than 12 and is not in the solution set → A
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