maggie2563 maggie2563
  • 10-04-2021
  • Mathematics
contestada

Solve the system.
x + y - 3z = -20
-3y + 2z = 5
z = 4

Respuesta :

saundaryagaikwad101
saundaryagaikwad101 saundaryagaikwad101
  • 10-04-2021

Answer:

x= -9

y= 1

Step-by-step explanation:

-3y+2z=5

(put the value of z in the equation)

-3y+2(4)=5

-3y+8=5

8-5=3y

3=3y

y=3/3

therefore y= 1

x+y-3z=-20

(put the value of y and z in the equation)

x+1-3(4)=-20

x+1-12=-20

x+1= -20+12

x= -8-1

therefore x= -9

I hope it will help.

Answer Link

Otras preguntas

Which answer represents the series in sigma notation?
Animals that have excellent night vision are most likely to have what?
Please help fast I’m not sure exactly how to do this or find it
I don’t even know if I’m doing the right thing or not I’m so confused
how does alcoholism affect family members
The highest elevation in North America is Mounth Mckinley, Alaska, which is 20,320 feet above sea level. The lowest elevation in North America is Death Valley,
Enlightenment thinkers will inspire which three revolutions?
angelo recently opened a bank account and deposits the same amount each week. After 8 weeks, he deposited $280. He wants to deposit a total of 420 in his accoun
Which triangle dose not belong with the other three. Explain
what is the rate of decay for the function f(x) =2(0.95)^x ( x is on top of the parentheses)