fisherjake510 fisherjake510
  • 01-08-2017
  • Mathematics
contestada

Solve the system using elimination. x + 2y = –6 3x + 8y = –20

Respuesta :

texaschic101
texaschic101 texaschic101
  • 01-08-2017
x + 2y = -6....multiply by -3
3x + 8y = -20
---------------
-3x - 6y = 18 (result of multiplying by -3)
3x + 8y = -20
--------------add
2y = -2
y = -2/2
y = -1 <===

x + 2y = -6
x + 2(-1) = -6
x - 2 = -6
x = -6 + 2
x = -4 <==

solution is (-4,-1)
Answer Link

Otras preguntas

Can someone help me
The united nations committee that drafted the universal declaration of human rights was led by:
The base of a right pyramid is a regular hexagon with sides of length 1212 m. the altitude is 66 m. find the total surface area of the pyramid.
What is the smallest number greater than 100 that is : a)divisible by two ? b)divisible by ten? c)divisible by four ?
If every dimension of a two dimensional figure is multiplied by k, by what quantity is the area multiplied?
A bundle contains 500 $20 bills. What is the value of 44 bundles?
When beginning to research a given topic, its important to?
What is the simplest form of this?
Find the savings plan balance after 4 years with an apr of 7% and monthly payments of 100
If two of the cations have similar rf values how will you be aple to determine the difference