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
8090 [49]
3 years ago
7

Solve for x,y, and z

Mathematics
1 answer:
Lostsunrise [7]3 years ago
3 0
Equation 1)  3x + 2y - 5z = 3
Equation 2)  4x - 2y - 3z = -10
Equation 3)  5x - 2y - 2z = -11

Add equation 1 with equation 2.

Equation 4)  7x - 8z = 7

Then subtract equation 3 from equation 2.

Equation 5)  -x -z = 1

Multiply all of equation 5 with 7.

5)  -7x - 7z = 7
4)  7x - 8z = 7

Add equations together.

z = 14

Plug in 14 for z in equation 4.

7x - 8z = 7

7x - 8(14) = 7

7x - 112 = 7

7x = 119

x = 17

Plug in 17 for x in equation 1, and 14 for z.

1)  3x + 2y - 5z = 3

3(17) + 2y - 5(14) = 3

51 + 2y - 70 = 3

2y - 19 = 3

2y = 22

y = 11

So, x = 17, y = 11, and z = 14

~Hope I helped!~



You might be interested in
Find the value of 9x + 2 given that -5x-3=2​
Sloan [31]

-5x-3 = 2\\-5x=5\\x = -1

Now plug the x value into 9x + 2

9(-1)+2) = -7

Hope that helps!

7 0
3 years ago
In a Toy store, the ration of dolls to teddy bears is 9:3. If the store has 240 dolls, how many teddy bears are in the store
agasfer [191]

Answer:

80

Step-by-step explanation:

It means that there are a third part of teddy bears, so

240 / 3 = 80

8 0
3 years ago
Read 2 more answers
Use the formula for the general term​ (the nth​ term) of a geometric sequence to find the indicated term of the following sequen
xenn [34]

Answer:

a8=10935

Step-by-step explanation:

A geometric sequece is a sequence of the form

a_n=a\cdit r^{n-1}

in our case we know that a=a_1=5 and r=3, hence

a_8=5 \cdot 3^7=10935

6 0
3 years ago
A. Yes, because it has two straight lines. (0) O B. Yes, because it passes the vertical line test. O C. No, because it is not a
alexandr402 [8]

Answer:

No because it fails the vertical line test. Anytime a choice contains the phrase vertical line test, you give that phrase first consideration. In this case all x values have two y values, and that is the definition of failing the vertical line test.  

The answer is D.

8 0
3 years ago
Please help me do this
marin [14]
If you divide 35 (amount of detergent in the container )into 1.25 (the 1 1/4 cups) your answer would be that you can do 28 loads , and if you had 3 boxes you would be able to do 84 loads because you just need to multiply the previous answer by 3
3 0
3 years ago
Read 2 more answers
Other questions:
  • A line has a rise of 3 and a run of 12. find the slope of the line. type a numerical answer in the space provided. if necessary,
    6·1 answer
  • True or false 120% of a whole number is always greater than the number? and why?
    13·2 answers
  • 4 x ½ what is the answer​
    15·1 answer
  • A soccer ball was kicked in the air and follows the path h(x)=−2x2+1x+6, where x is the time in seconds and h is the height of t
    5·2 answers
  • What’s the correct answer to this problem ?
    11·1 answer
  • Does √(x) + √(x) = √(2x)?<br><br><br>If not please explain.
    8·1 answer
  • Triangle PQR has coon instes (2.4), 0(-2,4), R(0,-6). Write the coordinates of the vertices of the image of a triangle afte aans
    8·2 answers
  • What is the coefficient in the expression y + 14?
    14·1 answer
  • Examine Carmen's plans for rail lines at a train station.
    8·1 answer
  • Select the correct answer from each drop-down menu. Which system of equations is represented by this graph? Graph shows system o
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!