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
laila [671]
3 years ago
11

9x+2y-27z=-155 -11x-y+37z=208 19x+6y-52z=-304

Mathematics
1 answer:
Paladinen [302]3 years ago
3 0

Answer:

(x,y,z)=( -2, -1 ,5)

Step-by-step explanation:

9x+2y-27z=-155                                                        (1)

-11x-y+37z=208                                                        (2)

19x+6y-52z=-304                                                     (3)

(1) *3   ;(2) *6     ;(3)*1, you have

27x+6y-81z=-465                                                      (1)

-66x-6y+222z=1248                                                 (2)

19z+6y-52z=-304                                                      (3)


(1) +(2), you have

-39x+141z= 783                                                       (4)

(4) /3, you have

-13x +47z=261                                                          (4)


(2) +(3), you have

-47x+170z=944                                                       (5)


From ( 4) and (5), you have equations

-13x +47z=261                                                         (4)

 -47x+170z=944                                                       (5)


(4)*(-47);    (5)*13,  you have

611x-2209z=-12,267                                              (4)

-611x+2210z=12,272                                              (5)


(4)+(5), you have

z=5

Replace z=5 in (4), you have

611x- 2209*5=-12,267

611x- 11,045 =-12,267

611x=-1222

x= -2

Replace x=-2, z=5 in (1) , you have

9*(-2) +2y -27*5=-155

-18+2y-135=-155

-18+2y=-20

2y=-2

y=-1

Result (x,y,z)=( -2, -1 ,5)









You might be interested in
Katherine el día lunes utiliza 3 horas en las redes sociales, el día martes utiliza 4.30 cuantos minutos utiliza Katherine en lo
BartSMP [9]

Answer: 450 minutes

Step-by-step explanation:

4 hours and 30 minutes equals 4.5 hours.

3+4.5=

7.5 hours

1 hour equals 60 minutes

Hence,

7.5*60=

450 minutes

7 0
10 months ago
Help me asap!! <br><br> quick before I'm late
Anni [7]
Exact form: 9/20 and decimal form: 0.45
3 0
3 years ago
Read 2 more answers
Which line segment is a radius of circle F?<br> BE<br> AC<br> AB<br> BF
AlexFokin [52]
I think the best answer is AB
8 0
2 years ago
2. Which interval notation represents the set of all real
anygoal [31]
B. (2,20] is the correct answer
3 0
2 years ago
What is an algebraic expression for this word phrase?
snow_lady [41]
The first choice, 5+7n.
3 0
2 years ago
Other questions:
  • In 2000, the average price of a football ticket for a Minnesota Vikings game was $48.28. During the next 20 years, the price inc
    9·1 answer
  • What percent of the circle below is shaded?
    14·1 answer
  • A truck whose bed is 8 feet long,5 feet wide and 3 feet high is delivering sand for a sand sculpture competition. How many trips
    6·1 answer
  • The sum of 6 consecutive even numbers is 126<br> What is the fourth number in this sequence?
    10·1 answer
  • Can someone help me out
    9·1 answer
  • Find the distance between points P(3, -8) and Q(7, 4). Round to the nearest tenth if necessary.
    12·2 answers
  • !!30 points!!
    15·2 answers
  • Zeb and his wife have a taxable income of $167,487. What is their tax liability?
    6·1 answer
  • HELP ASAP, WILL GIVE BRAINLIEST
    14·2 answers
  • What is the final transformation in the composition of transformations?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!