alyssavigil8 alyssavigil8
  • 20-06-2018
  • Mathematics
contestada

2x + 4y = 16 , 2x - 4y = 0

Respuesta :

kanest
kanest kanest
  • 20-06-2018
We can combine the two equations to eliminate a variable, as the coefficients for y in both equations are opposite numbers.

Combine the equations:

[tex]4x = 16[/tex]

Divide both sides by 4 to get x by itself:

[tex]x = 4[/tex]

Plug this value into one of the equations:

[tex]2(4) + 4y = 16[/tex]
[tex]8 + 4y = 16[/tex]

Subtract 8 from both sides:

[tex]4y = 8[/tex]

Divide both sides to get y by itself:

[tex]y = 2[/tex]

The answer is 'x = 4, y = 2'.
Answer Link

Otras preguntas

Which expression is equivalent to (7x - 5)-(3x - 2)? A. 10x - 7. B. 10x - 3 C. 4x - 7 D. 4x - 3
Icd 10 code for respiratory failure with hypoxia
A spiral staircase winds up to the top of a tower in an old castle. To measure the height of the tower, a rope is attached to the top of the tower and hung down
Simplify this please. (29)^3
1. Lipid molecules contain either saturated or unsaturated fatty acids. You may have seen different types of fatty acids listed in nutrition labels on foods. Ba
Which of the following will usually be found on an income statement prepared using absorption costing? Contribution Margin Gross Margin A) Yes Yes B) Yes
Place grouping symbols to make the equations true 9×34+8÷6=63 13+12-7÷3×5=30
x^4dy/dx+x^3y=-sec(xy)​
Cambia las oraciones para que sean negativas. Sigue el modelo. (1) Alguien se ducha. ___ se ducha. ___ se ducha ___. (2) Ellas van también. Ellas ___ van. Ella
Write 25-s as a phrase