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
Dimas [21]
3 years ago
6

When Megan solved this system using the elimination method , she added the equations together and got the equation 4y = 16. Then

she solved that equatio n and got y = 4. Then she substituted 4 in the first equation for y and solved for x. She got x = 4. The point (4, 4) is not the correct solution. Please state in a complete sentence where she made her first mistake. What is the correct solution to the system ? Show your work in the space provided. 2x + 3y = 20 - 2x + y = 4
Mathematics
1 answer:
weqwewe [10]3 years ago
8 0

Answer:

Megan added the equations together but  she subtract 4 instead of addition of 4. The correct solution is (1,6).

Step-by-step explanation:

The given equations are

2x+3y=20        ...(1)

-2x+y=4            .... (2)

Add both equations to eliminate x.

2x+3y-2x+y=20+4

4y=24

Megan make a mistake in this step. She added the equations together but she subtract 4 instead of addition of 4.

Divide both sides by 4.

y=6

Put this value in equation (1).

2x+3(6)=20

2x+18=20

2x=2

Divide both sides by 2.

x=1

Therefore the correct solution is (1,6).

You might be interested in
Marcos instaló un antivirus en su teléfono que se actualiza cada 4 días, otro en su Tablet que se actualiza cada 6 días y otro e
gizmo_the_mogwai [7]

Answer:

Respuestxplicación paso a paso: mcm (4-6-10)=en total es 60 dias

8 0
3 years ago
Multiply. Answers should be in simplest form.<br> 3/7 x10
chubhunter [2.5K]

Answer:

4.28

I think this it. I used a calculator online to help solve this problem. I don't know what the answer is but I used an online calculator to solve the problem. I rounded the answer to the nearest hundreth.

5 0
3 years ago
What equals 29 in multiplation
Marizza181 [45]

Answer: the only thing there is 1x29

Step-by-step explanation: hope it helps

7 0
3 years ago
Find last year’s salary if, after a 3% pay raise, this year’s salary is $30,900
Liono4ka [1.6K]
Your answer is $30,000.
The way I have answered this is quite strange, but I'll do my best to explain it. So because we know that $30,900 is 3% than last year, we can call it 103%. This allows us to form a ratio and therefore find 100%.
30,900 : 103
÷ 103
300 : 1
× 100
30,000 : 100
Which means $30,000 is 100%, or 3% less than $30,900. I hope this helps! Let me know if it was confusing or anything :)
5 0
3 years ago
Read 2 more answers
Find an ordered pair (x,y) that is a solution to the equation. 3x-y=8
allochka39001 [22]

Answer:

(2,-2)

Step-by-step explanation:

3x-y =3(2) -(-2)= 6 +2 = 8

7 0
3 years ago
Other questions:
  • What is 2.03_2.021 greater than less then or equal to !?
    14·2 answers
  • Evaluate −3x+5y when x=16 and y=14. Write your answer as a fraction in simplest form.
    15·1 answer
  • During the summer Austin sells tomatoes at his family's produce stand . Every morning he starts with 150 tomatoes on. Sunday Aus
    13·1 answer
  • What is the solution to the equation -3(h+5)+2 = 4(n+6)-9
    7·1 answer
  • You have a three year fixed rate lease of $900/month due to expire next month. Your landlord is willing to renew the three year
    7·1 answer
  • Can anybody help me answer this ASAP thank you
    12·1 answer
  • Can i get help on this
    7·1 answer
  • What Islamic cultural characteristics were spread by trade during the medieval times?
    13·2 answers
  • Please help...which of the following is an arithmetic sequence?
    5·2 answers
  • What is the area of a rectangle whose length is (2x-1) cm and whose width is (X+2) cm?<br><br>help.​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!