Y=4 or -4
Explanation: trust me bro
Do you have a picture, I need one to help you, otherwise I can’t.
When you write the equation of a circle in the form
Then the center of the circle has coordinates 
and the radius is 
So, in your case, the center of the circle is 
F(-4) = 1
4f(-4) = 4
The point of interest is (-4, 4).
Respuesta:
(2945.411; 3054.589)
Explicación paso a paso:
Dado ;
Tamaño de la muestra, n = 50
Media, xbar = 3000
Desviación estándar, s = 200
Nivel de confianza, Zcrítico al 95% = 1,96
El intervalo de confianza se define como:
Xbar ± margen de error
Margen de error = Zcrítico * s / sqrt (n)
Margen de error = 1,96 * 200 / sqrt (50)
Margen de error = 54.589
Límite inferior = (3000 - 54.589) = 2945.411
Límite superior = (3000 + 54.589) = 3054.589
(2945.411; 3054.589)
