Ericaeldridge Ericaeldridge
  • 06-03-2019
  • Mathematics
contestada

what is the solution to this system of equations?
3x+y=-11
2x+2y=-10

A.(4,-23)
B.(-6,7)
C.(1 1^2,3)
D.(-3,-2)

Respuesta :

isaiahb30 isaiahb30
  • 06-03-2019

3x+y=−11

3x+y+−3x=−11+−3x(Add -3x to both sides)

y=−3x−11

2x+2y=−10

2x+2(−3x−11)=−10

−4x−22=−10(Simplify both sides of the equation)

−4x−22+22=−10+22(Add 22 to both sides)

−4x=12

−4x

−4

=

12

−4

(Divide both sides by -4)

x=−3

y=−3x−11

y=(−3)(−3)−11

y=−2(Simplify both sides of the equation)

Answer:

x=−3 and y=−2

D.(-3,-2)

Answer Link

Otras preguntas

Which of the following elements will most easily lose its electrons to fluorine to form a salt? A Na B Al C S D Ar
What developments in the late 1880s and mid-1890s demonstrated the increasing interest of the United States in Latin America?
Why are floods in urban areas particularly dangerous?
Find the surface area of a cylinder with a diameter of 34 and height of 10. Use 3.14 for π. Round your answer to the nearest tenth.
how do you say "the golden one" in spanish
Why did the early people need to find new food sources
what is 1+2+3+4+5 all the way plus 99+100?I'm in 3rd grade advanced math and I need help!
Give the function a rule. {(6,42), (0,0), (8,72), (2,6)}
8x^3-27=0 how do I solve this
Explain how energy is transferred in a food web.
good job