Ti solve the system of equations below, Becca isolated x^2 in the first equation and then substituted it into the second equation. What was the resulting equation? (equation and choices in pic)

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maaaaaathgurl maaaaaathgurl · Answer 1 · 2017-06-27T02:39:51+02:00

You isolate x^2 which makes it x^2=9-y^2
Then you substitute that into the second equations which gives you answer C!
Hope this helps

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boffeemadrid boffeemadrid · Answer 2 · 2019-03-06T16:12:32+01:00

Answer:

(C)[tex]\frac{9-y^2}{25}-\frac{y^2}{36}=1[/tex]

Step-by-step explanation:

It is given that there is the system of the equations that are:

[tex]x^2+y^2=9[/tex] (1)

and [tex]\frac{x^2}{25}-\frac{y^2}{36}=1[/tex] (2)

Becca isolated [tex]x^2[/tex] from the equation (1) and substituted in equation (2), therefore

From the equation (1), we have

[tex]x^2=9-y^2[/tex]

Substituting this in equation (2), we get

[tex]\frac{9-y^2}{25}-\frac{y^2}{36}=1[/tex]

This is the resulting equation.

Thus, option C is correct.