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nicole8712 nicole8712
  • 16-03-2016
  • Mathematics
Answered

a 9 grade math class has 27 students there are twice as many girls in this class as there are boys.write a system of equation that could be used to model this situation

Verified Answer :

lelee2
lelee2 lelee2
  • 16-03-2016

The first equation is
x + y = 27
For the second equation, there are twice as many girls (y) as boys (x), so you write:
y = 2x

Now you have a system of equations:
x + y = 27
y = 2x

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