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5 April, 11:27

Given: A = {18, 6, - 3, - 12}

determine all elements of set A that are in the solution of the inequality 2/3x+3<-2x-7.

A. {-3, 6, 18}

B. {6, 18}

C. {-3, - 12}

D. {-12}

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Answers (1)
  1. 5 April, 14:47
    0
    First solve the inequality:

    (2/3) x + 3< - 2x-7

    (8/3) x< - 10

    x< - 30/8

    x<-15/4 or x< - 3.75

    now look for the answers which satisfy this, and the answer will be D
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