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
LUCKY_DIMON [66]
3 years ago
9

Solve the system of equation by the addition method x-2y=11 and -x+6y =-31

Mathematics
1 answer:
Sonbull [250]3 years ago
3 0

Answer: x = 1, y = - 5

Step-by-step explanation:

The given system of linear equations is expressed as

x - 2y = 11- - - - - - - - - - - - -1

- x + 6y = - 31- - - - - - - - - - - -2

We would eliminate x by adding equation 1 to equation 2. It becomes

- 2y + 6y = 11 - 31

4y = - 20

Dividing the the left hand side and the right hand side of the equation by 4, it becomes

4y/4 = - 20/4

y = - 5

Substituting y = - 5 into equation 1, it becomes

x - 2 × - 5 = 11

x + 10 = 11

Subtracting 10 from the left hand side and the right hand side of the equation, it becomes

x + 10 - 10 = 11 - 10

x = 1

You might be interested in
A chipmunk can run 5 m/s. A fox can run 8 m/s. If the chipmunk and the fox running at the same time, will the chipmunk make it t
nikklg [1K]
No, because the fox runs quicker and will catch up to the chipmunk.

Hope this helps :)
3 0
3 years ago
Question 17 i need help answer is -16 but don’t know how
Mila [183]

Answer:

-16

Step-by-step explanation:

-k² -(3k-5n)+4n k=-1 , n= -2

= -(-1)² - ( 3(-1) -5(-2) )+4(-2)

= -1-(-3+10)-8

= -1-(7)-8

= -1-7-8

= -16

4 0
3 years ago
Find the length of the missing side.<br> 50 m<br> 30 m<br> The length of the missing side is<br> m.
satela [25.4K]

Answer: The missing length is 40 m.

Step-by-step explanation:

30^2 + b^2 = 50^2

900 + b^2 = 2500

-900              -900

       b^2 = 1600

b=  40

3 0
3 years ago
Ann has bought 10 pounds of dog food. She feeds her dog
Yanka [14]

Answer:

25 meals

Step-by-step explanation:

She has 10 pounds total and she feeds 2/5 per meal, so we do 10/(2/5)) to get 25

Hope this helps

5 0
3 years ago
What is £56 divided in a ratio of 3:5?
Luda [366]
First, add the ratio together to get the denominator of the fraction you will use to determine the share. 3+5= 8. Now, you have two fractions: 3/8 and 5/8. Next, just find 3/8 and 5/8 of 56 to get your answers:
(56÷8)×3= <span>£21
</span>and
(56÷8)×5= <span>£35</span>
7 0
3 years ago
Other questions:
  • Find The IQR the interquartil range
    14·2 answers
  • a ship is 2.6° off course. if the ship is traveling at 26.0 miles per hour, how far off course will it be after 5 hours? (round
    8·1 answer
  • HELPPPP WILL GIVE BRAINLIEST TO FIRST RIGHT ANSWER
    8·2 answers
  • If a tree 28 meters tall casts a shadow 32 meters long, what is the angle of elevation of the sun to the nearest degree?
    7·2 answers
  • I NEED THIS NOW HELLLPPP PLDDD
    7·1 answer
  • A hiker leaves her camp in the morning. She walks 9 miles west then 10 miles north. Explain how you would find how far she has t
    9·1 answer
  • Write each power as a proudct of the same the factor. Then find the value of 5^5
    13·2 answers
  • Can someone help with 6,7,8,9?
    9·1 answer
  • 4 is a square number and also an even number. How many other whole numbers less than 50 are an even, square number?
    10·1 answer
  • A trapezoid has one base measuring 12', and the other measuring 13'8". What is the area in square feet if the height of the trap
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!