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
uranmaximum [27]
3 years ago
14

Solve the system of equations and choose the correct ordered pair.

Mathematics
2 answers:
Dafna1 [17]3 years ago
3 0

So for this, I will be doing the elimination method. Firstly, multiply both sides of the first equation by 2:

6x-8y=52\\2x+8y=-36

Next, add the two equations together to get 8x=16 . From here you can solve for x.

For this equation, just divide both sides by 8 and your first answer will be x=2

Now that we have the value of x, substitute it into either equation to solve for y:

3*2-4y=26\\6-4y=26\\-4y=20\\y=-5\\\\2*2+8y=-36\\4+8y=-36\\8y=-40\\y=-5

<u>In short, the solution is (2,-5), or A.</u>

slavikrds [6]3 years ago
3 0

3x-4y=26

2x+8y=-36

We will solve this system with gaus algorithm

We multiply first equation with number 2 and we get

6x-8y=52 => we add second equation to this and we get

8x=16 => x=2 => we replace x=2 in first equation and we get

3*2-4y=26 => 6-4y=26 => -4y=20 => y=-5

The correct answer is A.

Good luck!!!



You might be interested in
john has x years his sister has 2 years more if the sum of their age is 10 what is the age of her sister
sveta [45]
John is 4 and his sister is 6.
7 0
3 years ago
What is the distance between the points-6,7 and -1,1 round to nearest whole unit
Maru [420]
The answer would be 7.81, or about 8 units if you estimate
6 0
3 years ago
Read 2 more answers
Cari drew a line that was 9 inches long. She divided the line into 10 equal-length segments.
vivado [14]
Hello!

You divide how long the line is by the amount of segments

9 / 10 = 0.9

The answer is 0.9 inches long

Hope this helps!
8 0
3 years ago
Read 2 more answers
Solve the system of equations using substitution
Andru [333]

Answer:

x = 136/11 , y = 68/11

Step-by-step explanation:

Solve the following system:

{6 x - y = 68

2 y = x

Hint: | Choose an equation and a variable to solve for.

In the second equation, look to solve for x:

{6 x - y = 68

2 y = x

Hint: | Reverse the equality in 2 y = x in order to isolate x to the left hand side.

2 y = x is equivalent to x = 2 y:

{6 x - y = 68

x = 2 y

Hint: | Perform a substitution.

Substitute x = 2 y into the first equation:

{11 y = 68

x = 2 y

Hint: | Choose an equation and a variable to solve for.

In the first equation, look to solve for y:

{11 y = 68

x = 2 y

Hint: | Solve for y.

Divide both sides by 11:

{y = 68/11

x = 2 y

Hint: | Perform a back substitution.

Substitute y = 68/11 into the second equation:

{y = 68/11

x = 136/11

Hint: | Sort results.

Collect results in alphabetical order:

Answer: {x = 136/11 , y = 68/11

7 0
3 years ago
⚠️HELP in boolean please⚠️
Readme [11.4K]

Answer:

how did you get those warning signs in your question

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Jessica is selling books during the summer to earn money for college. She earns a commission on each sale but has to pay for her
    14·2 answers
  • you want to compute a 95% confidence interval for the mean of a population with unknown population standard deviation. the sampl
    5·1 answer
  • Kali left school and traveled toward her friend’s house at an average speed of 40
    9·1 answer
  • What is the coefficient in this expression?
    14·2 answers
  • Please answer I will make you Brainliest if it's right
    7·2 answers
  • Which car have traveled the farthest
    8·1 answer
  • Please help! there are only 12 questions that I need help with. ​
    12·2 answers
  • Math.... Can you help
    12·1 answer
  • Ratio number 1.50:1.38
    9·1 answer
  • Please help me with this
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!