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Zina [86]
3 years ago
7

5x + 2y =20 when x =0.3?

Mathematics
2 answers:
V125BC [204]3 years ago
5 0
Hey there! :)

<em>First, let's substitute x with 0.3, and multiply by 5</em>

0.3 × 5 = 1.5

Here is your new equation:

1.5 + 2y = 20

<em>Subtract 1.5 from 20</em>

20 - 1.5 = 18.5

2y = 18.5

<em>Divide both by 2</em>

2y ÷ 2 = y
18.5 ÷ 2 = 9.25

y = 9.25

Hope this helps :)
SVEN [57.7K]3 years ago
3 0
9.25 I think. Multiply 5 by .3 and subtract that from 20. Divide what you get from the subtraction by 2
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