Answer:
0.02044989775
Step-by-step explanation:
(6n^2-4)+(-2n^2+9)
6n^2-4-2n^2+9
4n^2+5
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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
