jasssminne
jasssminne
12-06-2018
Mathematics
contestada
5x + 2y =20 when x =0.3?
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august1234
august1234
12-06-2018
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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Creati
Creati
12-06-2018
Hey there! :)
First, let's substitute x with 0.3, and multiply by 5
0.3 × 5 = 1.5
Here is your new equation:
1.5 + 2y = 20
Subtract 1.5 from 20
20 - 1.5 = 18.5
2y = 18.5
Divide both by 2
2y ÷ 2 = y
18.5 ÷ 2 = 9.25
y = 9.25
Hope this helps
:)
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