Alyyyyyyy
Alyyyyyyy Alyyyyyyy
  • 01-12-2015
  • Mathematics
contestada

solve for x and y
-2x-y=-9
5x-2y=-9

Respuesta :

taskmasters
taskmasters taskmasters
  • 01-12-2015

we use equation 1 first.
-2x -y = -9 

 -y = -9 + 2x

y = 9 -2x

We substitute value of y in equation 2

5x - 2 (9 - 2x) = -9

5x -18 - 4x = -9

5x - 4x = -9 + 18

x = 18 -9

x = 9

We now find the value of y

-2x -y = -9

-2 (9) - y = -9

-18 - y = -9

-y = -9 + 18

y = 9 - 18

y = -9





Answer Link

Otras preguntas

1. Division of society on the basis of class isA. Peculiar to few affluent societiesB. Of comparatively recent originC. Found in all societies since times pastD
How do Valentines entrance and message affect the plot A. They make it clear that Duke Orsinos hunting trip will succeed B. They point to the obvious fact that
2x - 3 = 5(x + 4) + 1 solve for x and show work
Which is an example of a high-risk behavior that increases the likelihood of contracting an STI?
Pick any alternative energy, that you believe is best suited to use while saving the environment and discuss. (3-6) sentences.
spider plants use which of the following asexual options
Twenty times one hundred and one (20 x 101)
A flower grows 6 centimeters in 2 months. How many centimeters does it grow in one week?
Divide algebraic fractions 12a2/18b2÷4a/3b
help me plsssssssssss agian