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In Mathematics / High School | 2014-01-28

In a class, 45 students take the SAT exam. The number of boys is 8 more than the number of girls.

a. Write a system that models the above situation.

b. Do you need to multiply any of the equations by a constant? If so, which equation and what is the constant?

Asked by BlockishKhan

Answer (3)

well you have girls as x and boys as y so then its x+y = 45 and x+8 = y so then you can substitute to get 2x +8 =45 which i believe is a system but I'm not sure. then you solve to get a half… thats not right but i think i hav the system part sorry

Answered by TurtleGirl4 | 2024-06-10

well you have girls as x and boys as y so then its x+y = 45 and x+8 = y so then you can substitute to get 2x +8 =45 which i believe is a system but I'm not sure. then you solve to get a half… thats not right but i think i hav the system part sorry ;

Answered by mgalan6650 | 2024-06-12

The system of equations modeling the situation is: x + y = 45 and y = x + 8 . There is no need to multiply any of the equations by a constant to solve this system. We can directly substitute the second equation into the first to find the solution.
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Answered by TurtleGirl4 | 2024-09-30

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