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
Alchen [17]
3 years ago
12

Solve the following system of equations and select the correct answer below:

Mathematics
1 answer:
Sauron [17]3 years ago
5 0
3x + 3y + 2z = -5 ⇒ 3x + 3y + 2z = -5 ⇒ 3x + 3y + 2z =   -5
1x + 1y + 3z = -4 ⇒ 1x + 1y + 3z = -4 ⇒ 3x + 3y + 9z = -12
3x -  1y + 5z = -8                                                    -7z = 7
                                                                                -7    -7
                                                                                  z = -1
3x + 3y + 2z = -5                                                      
1x + 1y + 3z = -4 ⇒ 1x + 1y + 3z = -4
3x -  1y + 5z = -8 ⇒ 3x -  1y + 5z = -8
                                        4x + 8z = -12     

     4x + 8z = -12
 4x + 8(-1) = -12
       4x - 8 = -12
           + 8    + 8
            4x = -4
             4      4
              x = -1

        3x + 3y + 2z = -5
3(-1) + 3y + 2(-1) = -5
           -3 + 3y - 2 = -5
             3y - 3 - 2 = -5
                  3y - 5 = -5
                      + 5  + 5
                       3y = 0
                        3     3
               (x, y, z) = (-1, 0, -1)
You might be interested in
State of the triangles in each pair of similar. If so, State how you know they are similar and complete the similarity statement
Vinil7 [7]

Answer:

  b.  not similar

Step-by-step explanation:

The given sides* have the ratio 30:39 = 10:13 in one triangle and the ratio 20:27 = 10:13.5 in the other triangle. Since these ratios are different, the triangles cannot be similar.

____

* These are the sides bracketing the vertical angles at T. If the triangles were similar, the three sides would have to have the ratios 10 : 13 : 13.5.

However, the geometry shown would require that the angle opposite side 13.5 in one triangle have the same measure as the angle opposite side 13 in the other triangle. That is not possible, so it is not possible for these triangles to be similar.

6 0
3 years ago
Using a straight path, how far is a point located at (9,-5) from the origin? Round your answer to the nearest tenth.
Iteru [2.4K]
The answer is 10square root 7
4 0
3 years ago
Need urgent help on this! my grade is falling :(
ludmilkaskok [199]

Answer:

the answer is b

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Which function is graphed below?<br><br>​
Masteriza [31]

Exponential Function.

y =  {a}^{x}  \:  \: (a > 0) \:  \: (a≠1)

Also the shown graph is a decreasing graph.

y =  {a}^{x}  \:  \: (0 < a < 1)

The equation above is the equation of the graph that is shown in the picture.

8 0
3 years ago
Write an equation of the line passing through point P(0, −1)P(0, −1) that is parallel to the line y = −2x+3y = −2x+3.
Feliz [49]
This is the answer y= -2x-1
5 0
3 years ago
Other questions:
  • Which expression is a perfect cube?<br> -8^21y^8<br> -64x^64y^64<br> -125x^9y^20<br> -126x^9y^18
    10·1 answer
  • How far is Mars from the sun actually formatted
    15·1 answer
  • What is the equation of this graphed line?
    13·1 answer
  • The sales commission is 10% at an electronic store. How much does Saul have to sell in 22 hours to earn $12.50 per hour from com
    13·2 answers
  • Find the percent error of 4cm and 0.2 cm? Please help, thanks.
    8·1 answer
  • Which quadrilaterals have diagonals that are not lines of symmetry?
    6·1 answer
  • What is the difference between /-3/ and -3
    6·1 answer
  • Sum of 2 numbers is 36. The larger is 3 more than twice the
    13·1 answer
  • Which pair of angles are vertical angles? 6 and 5 2 and 3 1 and 3 5 and 8
    14·1 answer
  • Give the equation for a circle with the given center and radius. center at (-1, 3), radius = 4
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!