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9 February, 21:56

Which of the following equations shows "twice a number is eighteen?"

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Answers (2)
  1. 10 February, 00:10
    0
    twice a number is 18. ⇒ 2x = 18

    let x be the number.

    twice a number = two times a number = 2x

    is 18 means equals 18.

    so twice a number is 18 ⇒ 2x = 18
  2. 10 February, 00:57
    0
    Twice a number is a eighteen expressed as an equation, where the number is 'n' would be:

    2n = 18

    Solving for n by dividing by 2 on both sides would get us n = 9.

    Your final answer is 2n = 18.
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