Answer:
Please check the explanation.
Step-by-step explanation:
Given the equations
solving the system of the equations
Arrange the equation variables for elimination
solve
Divide both sides by -3
Therefore, the solutions to the system of the equations are:
But, it seems none of the options is true.
Answers:
1.) 78 would be the range
3.) 18.8 or letter C would be correct
4.) 9.4
- 84.7 + 59.2, this is your expression
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.
