berkeleystir berkeleystir
  • 01-04-2019
  • Mathematics
contestada

solve the system of equations using elimination/ combinations.
-2x - y= -4
x+ 2y = 5

Respuesta :

LammettHash
LammettHash LammettHash
  • 01-04-2019

If [tex]-2x-y=-4[/tex] and [tex]x+2y=5[/tex], notice that

[tex](-2x-y)+2(x+2y)=-4+2\cdot5\implies3y=6\implies y=2[/tex]

Then

[tex]x+2\cdot2=5\implies x=1[/tex]

Answer Link

Otras preguntas

Log4(6x-8)=3 Help please
K stands for a whole number. K + 7 is greater than 100 K - 7 is less than 90 Write all the numbers that k could be. Please help me
What Percent Of 700 Is 385
Which words in the sentence make up the appositive phrase? The winner of the art contest was Tiffany, my youngest cousin. A. was Tiffany B. of the art contes
During a windstorm, part of the top of a flagpole breaks off. The broken top portion touches the ground at an angle of 65degrees 14feet from its base. How tall
How do you put 0.8918 as a fraction
write the ratio 6 ft to 4yd as a fraction in simplest form.
How do you derive the drift velocity equation (I = nAve)?
Cory's average score after 8 tests is 91%. If he gets a 78% on his 9th test what will his new average be? How do i figure out this problem?
How many $0.21 pencils can be purchased for $7.00? Show your work.