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tino4ka555 [31]
3 years ago
10

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

Mathematics
2 answers:
jolli1 [7]3 years ago
4 0

you plug in the y .8 to the 8 that is 6.4

<span>them you subtract 40 by 6.4 that is  33.6</span>

<span>then you divide that by 4 is 8.4</span>

GREYUIT [131]3 years ago
3 0
Substitute in 0.8 for y.

4x+8y=40 \\ \\ 4x + 8(0.8) = 40 \\ \\ 4x + 6.5 = 40 \\ \\ 4x = 40 - 6.4 \\ \\ 4x = 33.6 \\ \\ x = 8.4 \\ \\

The final result is: x = 8.4.
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