When solving a system of equations by graphing it, and there is no intersection between the lines, then it has no solutions.
2x-y=4
Therefore: y=2x-4
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5x-10/4(2x-4)=10
5x-5/2(2x-4)=10
5x-5x+10=10
10=10
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*Problem can't be solved.
The answer is unnecessary
-0.04, -3/8, -0.38 is the answer
The question says boys/girls = 3/4 so if there are 12 boys in the class you can say:
3/4 = 12/?
and ? is the number of girls which is equal to:
? = 12*3/4 = 9
so if there are 12 boys in the class we will have 9 girls in the class :)))
i hope this is helpful
have a nice day
