Answer:
See below
Step-by-step explanation:
The z-score represents how many standard deviations are either above or below the mean. In this case, because the z-score is 1.2, this means that Gwen scored 1.2 standard deviations higher than the mean score, essentially meaning she did slightly better than most people.
Answer:
f(x) + g(x) = -2x -1
Step-by-step explanation:
Add both equations:
(3x-4) + (-5x+3) | Combine like terms
-2x -1
Answer:
Option D 
Step-by-step explanation:
Verify each quadratic equation
case A) we have

This quadratic equation has a leading coefficient of 1
Substitute the value of x=3 and x=-2 in the equation
For x=3

----> is not true
therefore
x=3 is not a solution of the quadratic equation
case B) we have

This quadratic equation has a leading coefficient of 1
Substitute the value of x=3 and x=-2 in the equation
For x=3

----> is not true
therefore
x=3 is not a solution of the quadratic equation
case C) we have

This quadratic equation has a leading coefficient of 1
Substitute the value of x=3 and x=-2 in the equation
For x=3

----> is not true
therefore
x=3 is not a solution of the quadratic equation
case D) we have

This quadratic equation has a leading coefficient of 1
Substitute the value of x=3 and x=-2 in the equation
For x=3

----> is true
therefore
x=3 is a solution of the quadratic equation
For x=-2


----> is true
therefore
x=-2 is a solution of the quadratic equation
I wanna say it is 49 I answered on my calculator!
Se escribe una equacion y se resolve.
Vamos a usar x para representar el peso de la piedra.
En en platillo que tiene la piedra, el peso total es: x + 1/9 + 2/3
En el otro platillo: 1/2 + 1/3
La balanza esta equilibrada por eso los pesos en los platillos son iguales.
x + 1/9 + 2/3 = 1/2 + 1/3
x + 2/18 + 12/18 = 9/18 + 6/18
x + 14/18 = 15/18
x = 1/18
Respuesta: La piedra pesa un octavo de kilogramo.