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
kupik [55]
3 years ago
5

90 POINTS IF ANSWER IS RIGHT!!!!!!!!!! PLEASE I NEED HELP!!!!

Mathematics
2 answers:
olganol [36]3 years ago
8 0

Answer:

no solution

Step-by-step explanation:

–5x – 12y – 43z = –136

–4x – 14y – 52z = –146

21x + 72y + 267z = 756

Every coefficient of the second equation is a multiple of 2, so divide both sides by 2.

Every coefficient of the third equation is a multiple of 3, so divide both sides by 3.

–5x – 12y – 43z = –136

–2x – 7y – 26z = –73

 7x + 24y + 89z = 252

Let's call the above system the "simplified original system."

Using the simplified original system, multiply the first equation by -2 and the second equation by 5. Then add them.

          10x + 24y + 86z = 272

(+)      -10x - 35x - 130z = 365

------------------------------------------

                   -11y - 44z = 637

Now we have an equation with only y and z.

Now, using the simplified original system, multiply the second equation by 7 and the third equation by 2. Then add them.

        –14x – 49y – 182z = –511

(+)       14x + 48y + 178z = 504

-------------------------------------------

                     -y - 4z = -7

Now we have a system in 2 unknowns, y and z.

-11y - 44z = 637

-y - 4z = -7

Multiply the second equation by -11 and add to the first equation.

      -11y - 44z = 637

(+)     11y + 44z = 77

-----------------------------

                 0 = 714

Since 0 = 714 is false, this system has no solution.

Shalnov [3]3 years ago
7 0

Answer:

No solution

Step-by-step explanation:

You might be interested in
caroline bought 6 pieces of gold ribbon. each piece was 3/5 of a yard long. How many yards of ribbon did she buy in all?
Zarrin [17]

Answer:

= 3 3/5 yards

Step-by-step explanation:

If 1 piece = 3/5 yard

What about 6 pieces = ?

= (6 x 3/5) ÷ 1

= 18/5 ÷ 1

= 18/5

= 3 3/5 yards

5 0
2 years ago
How much is3 dimes and a quarter
hram777 [196]

Answer:

55 cents

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
The Morris family bought 3 crates of eggs last week. Each crate had 18 eggs. Since then, they have eaten 25 of the eggs. How man
zzz [600]

Answer:

29

Step-by-step explanation:

3 x 8 = 54 - 25 = 29

5 0
2 years ago
Amelia rented a DVD and it was due to be returned on 26 Nov. She actually returned it to the shop on 12 Dec. The rental shop app
svet-max [94.6K]

Answer:

144 (pounds? euros? idk what currency it is)

Step-by-step explanation:

there are 16 day between the date. 16 x 9 = 144

6 1
3 years ago
Read 2 more answers
The coefficient of the a2 term is
Elena-2011 [213]

Answer:

-2

Step-by-step explanation:

The coefficient is the number in front of the variable.

5 0
3 years ago
Other questions:
  • actually post 17 status updates on her Facebook wall each day. Roberto posts 21 status updates on his Facebook wall each day. Pa
    10·1 answer
  • Apply distributive property to factor out the GCF <br><br> 27+18r=
    5·1 answer
  • A jar holds 4 1/4 cups of water . How much is this in fluids ounces? Write your answer as a whole number or a mixed number in si
    15·1 answer
  • Which equation is represented by the graph
    14·1 answer
  • pete's pools installs rectangular pools that are all 10 feet wide. the length can vary from 10 feet to 30 feet. the company inst
    8·1 answer
  • 9×6÷<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="dceff7e883ea9cef">[email&#160;protected]</a>×4÷5=56
    6·1 answer
  • Question.
    10·1 answer
  • What is the equation of the following line written in slope-intercept from??
    10·1 answer
  • Use the function y = 200 tan x on the interval 0 &lt; x &lt; 141. Complete the ordered pair (xº, 0). Round your answer to the
    14·1 answer
  • What is limit of startfraction x cubed minus 1 over x minus 1 endfraction as x approaches 1?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!