djgenesisgeronp1qozx djgenesisgeronp1qozx
  • 04-10-2018
  • Mathematics
contestada

Question 5

Solve the following system of equations by using the substitution method.
y = 6x – 11
-2x – 3y = -7

(1, 2)

(2, 1)

(-3, 1)

(2, 4)

Respuesta :

lisboa lisboa
  • 04-10-2018

answer is (2,1)

y = 6x – 11

-2x – 3y = -7

Substitute 6x - 11 for y in the second equation

-2x – 3(6x-11) = -7

-2x – 18x +33 = -7

-20x + 33 = -7

Now subtract 33 on both sides

-20x   = -7 - 33

-20x = -40 ( divide by -20 on both sides)

x= 2

We know y = 6x -11

Plug in 2 for x  and find out y

y = 6(2) -11= 12 -11 = 1

So answer is (2,1)


Answer Link

Otras preguntas

The solution to 9-2w≤11-10w is: 1.w≥1/4 2.w≤1/4 3.w≥5/2 4.w≤5/2
Which benefit results from being in a healthy romantic relationship? elimination of stress longer life increased intelligence higher income
I’ll give brainliest you don’t need to do the spreadsheet i just need something to write down i dont care if its 400 words or not.
I just want to tell whoever's reading this that they are awesome, clever and i hope you have a great day queen, king or royal :D
Transactions for the Bridgeport Company, which provides welding services, for the month of June are presented as follows. June 1 Bridgeport invests $4,180 cash
Duración o época de lade la generación 47?​
What was the Pima calendar stick used for
please make this quick
i cant figure out 5/4 divided by 3/5
A tank, in the shape of a cube with each side measuring 2 meters, is half-full of water. Above the water is air that is pressurized to 5 kPa. Calculate the resu