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2 June, 10:04

What is the value of x in the equation 4x + 8y = 40, when y = 0.8?

4.6

8.4

10

12

+1
Answers (2)
  1. 2 June, 11:28
    0
    4x + 8y = 40

    When y = 0,8:

    4x + 8*0,8 = 40

    4x + 6,4 = 40

    4x = 40 - 6,4

    4x = 33,6

    x = 33,6/4

    x = 8,4

    Answer : 8,4
  2. 2 June, 11:42
    0
    y x

    0.8 8.4

    4.6 0.8

    8.4 - 6.8

    10 - 10

    12 - 14
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