haileym368 haileym368
  • 02-06-2021
  • Mathematics
contestada

3x+4y=−2. 2x−4y=−8
Select the statement that correctly describes the solution to this system of equations.

3x4y2 2x4y8 Select the statement that correctly describes the solution to this system of equations class=

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 02-06-2021

Answer:

One solution at (-2,1)

Step-by-step explanation:

3x+4y=−2.

2x−4y=−8

Add the two equations together

3x+4y=−2

2x−4y=−8

------------------------

5x +0y = -10

Divide by 5

5x/5 = -10/5

x=-2

Now find y

2x-4y = -8

2*-2 -4y = -8

-4-4y = -8

Add 4 to each side

-4+4 -4y = -8+4

-4y = -4

Divide by -4

y = 1

Answer Link

Otras preguntas

Na2co3 nahc2o4 fecl3 nh4br kclo4 acidic basic or neutral
Are you able to help me: Simplify (4x + 2)3
Please help. What is the equation of the line in slope-intercept form?​
Which activity is an example of empathy is everyday life? O A. Telling your friend about your problems O B. Helping a Friend with his or her homework O C. Havin
Fuerza que la tierra ejerce sobre todos los cuerpos hacia su centro.
If 4. 0 j of work are performed in stretching an ideal spring with a spring constant (force constant) of 2500 n/m, by what distance is the spring stretched?
give the line that is parallel to the line y=-5x-2 and goes through (3,-9)
Consider the following inventory data for two companies: Nichols Inc. Winters Inc. Beginning inventory $ 120,000 $ 150,000 Ending inventory 80,000
Is methyl benzoate neutral? And what is it soluble in (NaOH, HCl, NaHCO3)?​
Which of the following statements about the neoclassicism movement is NOT true? • A. It mainly occurred during the 18th century and early 19th century. O B. It