serenaskai serenaskai

18-01-2021
Mathematics

contestada

If 2x(x-y)=54 and x=9, then y=

A. 6
B. 3
C. 2
D. 1

Respuesta :

Gadnukbreakerofworld Gadnukbreakerofworld

18-01-2021

Answer:

A. 6

Step-by-step explanation:

[tex]2x(x - y) = 54 \\ 2(9)(9 - y) = 54 \\ 18(9 - y) = 54 \\ 9 - y = \frac{54}{18} \\ 9 - y = 3 \\ y = 9 - 3 \\ y = 6[/tex]

Answer Link

PinkGreen9 PinkGreen9

18-01-2021

Im guessing it’s A but I’m not really sure hopefully it’s right

Answer Link

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