1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
FinnZ [79.3K]
3 years ago
5

Solve the following systems of 3-variable linear equations.​

Advanced Placement (AP)
1 answer:
Zina [86]3 years ago
6 0

Answer:

x = 9/25, y = 7/25, z = 4/25

Explanation:

step 1: solve for y in first equation to use substitution

y = -2x + 1

step 2: insert into second equation to eliminate y variable and work with two variables

3(-2x+1) + z = 1 (now distribute)

-6x + 3 + z = 1 (bring over the -3)

-6x + z = -2

step 3: now left with -6x + z = -2 and x + 4z = 1, so eliminate z

-6x + z = -2 (multiply by 4)

4(-6x + z = -2)

-24x + 4z = -8

-

x + 4z = 1 (brought down third equation)

-25x = -9

x = 9/25

then just plug in x into the third equation to solve for z, followed by plugging it into the first equation to solve for y. you should end with y = 7/25 and z = 4/25

You might be interested in
what was ONE similarity between the commercial interactions in the regions mentioned in the passage and commercial interactions
notka56 [123]
Ima b honest, I’m just here for the 5 points
4 0
3 years ago
After high school graduation, Andrea began work as a cashier at a grocery store.
vovikov84 [41]

Answer:

Downward social

Explanation:

It’s caused by external situations like losing a job/unemployment

6 0
3 years ago
Atsand<br>pool pic<br>S<br>pou<br>yo<br>pa<br>ose<br>18<br>e) tudo<br>AJ<br>Acharger​
Alina [70]

Answer:

no thanks no

Explanation:

no thanks no

3 0
3 years ago
Read 2 more answers
ANSWER QUICK
ValentinkaMS [17]

Answer:oximatelyo  important issue for the Netherlands, as due to its oelevation, approximately two thirds of its ar

5 0
3 years ago
Read 2 more answers
The most serious form of toxic wastes are radioactive wastes.<br> A) TRUE<br> B) FALSE
Ede4ka [16]
True, because their impact can be passed on through generations even if the waste is removed
8 0
3 years ago
Other questions:
  • 1. environment a scientific hypothesis that has been supported by data and facts over and over again 2. environmental science th
    7·1 answer
  • If nominal interest rate equals 5 percent and expected inflation is 3 percent, then the new nominal and real interest rates are
    11·1 answer
  • ito ang ahensiya ng pamahalaan na nangangasiwa sa mga alituntunin at mga polisiya na may kinalaman sa paggawa sa buong bansa.​
    12·1 answer
  • A star is observed from two positions of Earth in its orbit, in summer and winter. Which of these is the best method to calculat
    13·1 answer
  • Provide reasoning to justify your prediction with respect to how the predicted amount of pheromone is beneficial to the worms th
    7·1 answer
  • Can someonetell me something new they learn today. ​
    8·2 answers
  • I REALLY NEED HELP ON THE QUESTION PLEASE!!!!!
    15·1 answer
  • What was the response to the established scientific community to women scientists?(Royal Society of England, French Academy of S
    10·1 answer
  • Which Category from the essay question above would you put this document in?
    9·1 answer
  • How is everyone doing
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!