3 years ago

What is the value of x in the equation 4x +8y=40, when y=0.8? O 4.6 O 8.4 O 10 O 12

Mathematics

1 answer:

Tasya [4]3 years ago

4 0

4x + 8y = 40

4x + 8(0.8) = 40

4x + 6.4 = 40
40 - 6.4 = 33.6

33.6 / 4 = x

33.6 / 4 = 8.4

The answer option 2, 8.4

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