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25.08.2019 •
Mathematics
What is the solution for the system of equations x+y=2 and x-y=4
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Ответ:
x-y=4 (label equation two)
y=-x+2 (equation one rearranged, label this equation equation three)
sub 3 into 2
x-(-x+2)=4
x+x-2=4
2x-2=4
2x=6
x=3
sub x=3 into equation one
3+y=2
y=-1
therefore x=3 and y=-1
Ответ:
It's
1)The median for Company A is 31.25.
2)The median for Company B is 32.5.
4)The number of sales for Company A tend to be smaller than the number of sales for Company B.
Step-by-step explanation: