Bkoma Bkoma
  • 22-12-2014
  • Mathematics
contestada

4x-2y=12
-4x-9=54

How can you order a ladder?

Respuesta :

mericbalak1
mericbalak1 mericbalak1
  • 22-12-2014
Equations:

4x - 2y = 12
-4x - 9y = 54

Multiple them in both sides

4x - 2y - 4x - 9y = 12 + 54
-2y - 9y = 66
-11y = 66
y= -6

If y= -6 then put y in first or second equation.

I put it in first equation

4x - 2.(-6) = 12
4x + 12 = 12
x= 0

Therefore

(x,y) = (0, -6)
Answer Link

Otras preguntas

.101 as a simplified fraction
Make a the subject of the formula s=ut + 1/2at^2​
Mention what is the speed of USB 2.0 and USB thunderboard?
450 is 10x's as much as​
ATTACHMENT please help
A student is running a 5-kilometer race. He runs 1 kilometer every 3 minutes. Select the function that describes his distance from the finish line after x minut
How many houses divisions will the legislature have? how many member will be in each house
HELP will mark brainilest The original price of a sound system is $1250. For one day only, the store is offering a frequent shopper discount of 35% on all merc
why are agricultural impacts of climate change so uncertain?
What is the value of y? A.cannot be determined B.60° C.65° D.120°