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6 January, 12:44

Which equation is true when k = - 15

A) 3k - 11 = - 34

B) - 53 + 4k = 7

C) k/3 + 17 = 12

D) k/5 + 2.5 = 0.5

+3
Answers (2)
  1. 6 January, 12:50
    0
    B) - 53 + 4k = 7

    Step-by-step explanation:

    Substitute k=15 into each equation

    A) 3k - 11 = - 34

    3 (15) - 11 = - 34

    45 - 11=-34

    34 = - 34

    not true

    B) - 53 + 4k = 7

    -53 + 4 (15) = 7

    -53 + 60=7

    7 = 7

    true

    C) k/3 + 17 = 12

    15/3 + 17 = 12

    5+17 = 12

    22 = 12

    False

    D) k/5 + 2.5 = 0.5

    15/5+2.5 =.5

    3 + 2.5 =.5

    5.5 =.5

    False
  2. 6 January, 13:03
    0
    Answer: B - 53+4K=7
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