kaylan2019
14.02.2020 •
Mathematics
What is the solution of the following system of equations ? y- 2x and= 6 , y - 4x =0
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Ответ:
so girls=4x
and boys=5x
(because you don't know how many boys or girls there are)
then the equation would be
4x+5x=18
9x=18
so x=2
then 2 times 4 which equals 8
and 2 times 5 which equals 10
so there are 8 girls and 10 boys