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25 April, 09:35

What value or values of x satisfy 2|x+5.3|=4.2

a. x can only equal - 3.2.

b. x can only equal 7.4.

c. x can equal - 3.2 or - 7.4.

d. x can equal - 3.2 or 7.4.

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Answers (1)
  1. 25 April, 09:51
    +1
    We have, / x+5.3 / = 2.1;

    Then, x + 5.3 = 2.1 or x + 5.3 = - 2.1;

    x = 2.1 - 5.3; x = - 3.2;

    x = - 2.1-5.3; x = - 7.4;

    The correct answer is c.
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