amylumey2005
29.07.2019 •
Mathematics
System of equations solve y=2x+1 and 2x-y=3
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Ответ:
For this case we have the following system of equations:
We cleared "y" of the second equation:
Now we equate the equations:
Since 1 is not equal to -3 then the system has no solution.
This can also be observed, knowing that the lines are parallel since they have the same slope,
The system has no solution.
Ответ:
9x = 720 (divide by 9)
X= 80
In order to get the bigger ratio, which is 5, you would substitute x for 80. (I'm bad at explaining)
Work:
5(80)= 400