anac2019 anac2019

16-10-2018
Mathematics

contestada

Solve the system of equations by elimination. 2x-y+3z=-1, x+2y-4z=-1, y-2z=0

Respuesta :

abbylee78 abbylee78

16-10-2018

16, 3x-y=4

3x-3x-y=4-3x

-y=4-3x(multiply both sides by -1 to get...)

y=3x-4

17. -4x-5y=20

-4x+4x-5y=20+4x

5y=4x+20
5y/5=4/5x+20/5
y=4/5x+4

19,
-3x+7(0)=-21
-3x=-21
-3x/-3=-21/-3
x=7

Answer Link

Otras preguntas

Help ASAP please . Which expression represents the volume of the sphere, in cubic units? 3/4pi(6)^2 4/3pi(6)^3 3/4pi(12)^2 4/3pi(12)^3

Ya no vivimos en la ciudad _____ en el campo. A) sino B) pero

1) Which of the following is a surd ? a) 64 b) 6 root 64 c) 4 root 64 d) 3 root 64

make a report of industrial accident that has happened in the world or india how it happened and how to fix it

a racing car starts fron rest .if it gains an acceleration of 5m/second square in 10 second ,calculate the final velocity.

what is the slope-intercept equation of the line shown below?

Can you please tell me how the ratification of the US Constitution in 1788 represents an emerging American identity as a country and why?

Need Help Please I'm Out Of Time ;( Identify three temperatures that are colder than -5°C. Then, using complete sentences, explain how you know that they are co

As a result of fringing effect :Select one:a. gap reluctance decreasesb. gap reluctance increases linearly with magnetic densityc. gap reluctance increasesd. g

Why were the villagers in the story hey come on out worried about the nuclear waste goinginto the hole? Give tworeasons