Tjgg
Tjgg Tjgg
  • 02-11-2016
  • Mathematics
contestada

-x+2y=9
-7x-2y=-1
Solve each system by elimination

Respuesta :

Azieq
Azieq Azieq
  • 03-11-2016
x - 2y = - 9
7x + 2y = 1

x - 2y = - 9
(+)
7x + 2y = 1
___________
8x = - 8

x = - 1

- 1 - 2y = - 9
2y = 8
y = 4

i am a mathematics teacher. if anything to ask please pm me
Answer Link

Otras preguntas

The Long March, led by Mao Zedong, MOST LIKELY led to the rise of the A) Nazi party in Germany. B) start of the Korean War. C) Communist party in Chi
Which elements are distinct to drama and not typically found in other written stories? a. plot b. script c. setting d. theme e. cast
who leads the house of representatives, and how is this role different from that of the leader of the senate
the question says make each row of fractions equal by writing a number in each box
the question says make each row of fractions equal by writing a number in each box
What was the outcome of the Boston massacre
A bird flies at a speed of 2.3 m/s if it has 14 j of kinetic energy what is the mass
Nonverbal communication is tied to _______________. a. constructs b. integration c. culture d. multiple channels
the progressive movement was sometimes misguided and its interaction with racial minorities because progressive reformers
What is the process by which the layers of a glacier flow at different speeds without breaking? a. pyroclastic flow b. basal sliding c. ogive sliding d. pla