Brass is a metallic alloy that is made of copper and zinc. It takes 400 kg of zinc to make 1,200 kg of brass. How much copper is needed to make 450 kg of brass? (45 points)

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square

answer:   x*94 +688*6   = 267*100

94x+4128=26700    

94x=22572     /94

x=240.128

step-by-step explanation: mark as brainlest reallly need it thx