spiritnevland spiritnevland

03-01-2021
Mathematics

contestada

Solve the following system of equations:
-2x + y = 1
-4x + y = -1

A: (3, 1)
B: (-1, 3)
C: (-1, -3)
D: (1, 3)

Respuesta :

Eddie1Wan Eddie1Wan

03-01-2021

Answer:

x=1,y=3

correct answer is (1,3)

Step-by-step explanation:

We can quickly eliminate y by subtracting one equation from the other

(-2x+y=1)-(-4x+y=-1)

2x=2

x=1

plug x=1 into equation 1

-2(1)+y=1

y=1+2=3

Answer Link

Otras preguntas

22. Four years ago, Samantha was three times as old as Danny. Four years fromnow, Samantha will be only twice as old as Danny. How old are they now?

__________ is a way to stay safe while camping.

What are the spiral arms of the Milky Way made of? A. Older stars and comets B. Variable stars C. Asteroids and comets D. Younger stars and gaseous nebulae

Describe some of the factors that can cause hormones levels to fluctuate

what is the pressure, in atmospheres, of 2.97 mol h2 gas if it has a volume of 73 liters when the temperature is 298 k? 0.50 atm 0.060 atm 1.0 atm 2.0 atm

the constitutions necessary and proper clause is the source of which federal powers ?

The difference between a Quincenera and a Sweet 16?

A teacher polled her kindergarten classroom? Color Number of Students Red 5 Blue 7 Green 3 Y

If you are suddenly caught driving in a massive downpour, you should: drive until the storm passes stop in the middle of the road until the storm passes pull ov

a + c =150 9a + 6c = 1155