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27 June, 00:17

From the set {20, 38, 47}, use substitution to determine which value of x makes the inequality true.

x - 9 > 29

a. 47

b. none of these

c. 38

d. 20

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Answers (1)
  1. 27 June, 02:57
    0
    One way is to solve (it's easier)

    x-9>29

    add 9

    x+9-9>29+9

    x+0>38

    x>38

    just pick the numbers bigger than 38 as answer

    47 is only number (38>38 is false)

    answer is A
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