jsh65bsbs
24.06.2019 •
Mathematics
Find the solution of this system of equations 5x - 6y =-90 -10x - 6y =-90
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Ответ:
5x - 6y = -90
-10 x - 6y = -90
Subtracting,
15x = 0
x = 0
y = -90/(-6) = 15
x=0, y=15
Ответ:
Step-by-step explanation:
600g of 20%
100 - 20 = 80
600 = 80%
/80%
7.5 = 1%
x100
750 = 100%
£750
Sorry I don’t know what else to write. Hopefully, this guarantees you a mark.