a) 2:1
b) 1:2
2/3 are girls so 1/3 are boys
Answer:
x = -2
y = 6
Step-by-step explanation:
y= -3x
x + y =4
Substitute y = -3x from the first equation into the second equation
x + (-3x) = 4
Combine like terms
-2x = 4
Divide by -2
-2x/-2 = 4/-2
Now find y
y = -3x
y = -3(-2)
x/3 = 12/x
x^2 = 36
x = 6
9/y = y /x
9/y = y / 12
y^2 = 9 * 12
y = 9 * 4 * 3
y = 6√3
Answer
