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
lyudmila [28]
3 years ago
11

Solve the system of equations 2x - y = 11 and x + 3y = -5

Mathematics
2 answers:
Anna11 [10]3 years ago
3 0

Answer:

x = 4, y = -3

Step-by-step explanation:

{2x - y = 11

{x + 3y = -5

You can use the substitution method by solving for x in the second equation:

x + 3y = -5

Subtract 3y from both sides:

x = -3y - 5

Now, substitute this value for x into the first equation:

2x - y = 11

2(-3y - 5) - y = 11

Distribute:

-6y - 10 - y = 11

Add 10 to both sides:

-6y - y = 21

Combine like terms:

-7y = 21

Divide both sides by -7:

<u>y = -3</u>

Next, substitute this value for x into the second equation:

x + 3y = -5

x + 3(-3) = -5

Multiply:

x - 9 = -5

Add 9 to both sides:

<u>x = 4</u>

olga55 [171]3 years ago
3 0

Answer:

(7, 3)

Step-by-step explanation:

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

-2(x+3y)= (-5)-2              -2x-6y= 10

Then you will cross out the x, and add.

-7y =21 divide 7

y=-21/7 or y=3

Then you plug in the y where the y is and solve

2x-(3) = 11

2x = 14

x=7

         

You might be interested in
There are 45 students in a class. The ratio of boys to girls is 2:3. How many boys are there in the class?
Lena [83]

Answer:

18 boys

Step-by-step explanation:

we add 2 and 3 because they are equal parts:

2+3=5

Then we divide 45 by 5 because we want to find what 1 part equals"

45/5=9

We now do 9*2 to get an answer of:

9*2=18

hope this makes sense!

7 0
3 years ago
What is the math problem answer?
azamat

To find the mid point add both X coordinates together and divide by 2 and then do the same with the y coordinates.

X coordinate: 4 + -6 = 4-6 = -2 / 2 = -1

Y coordinate: -2 + 3 = 1 / 2 = 1/2


Midpoint: ( -1, 1/2)

3 0
3 years ago
Which temperatures are below 108°C? 230°F 212°F 225°F 228°F
Pani-rosa [81]

Answer:

i do not understand your question. do u want us to label from coldest to hottest?

Step-by-step explanation:


3 0
4 years ago
Read 2 more answers
A train covers a distance of 80 miles in 2 hours. At this rate, about how many hours will it take to cover a distance of 200 mil
Vadim26 [7]
Let's write miles over hours
80 / 2 = 200/ x
cross multiply
80x = 400
divide both sides by 80
x = 5

It will take 5 hours to cover 200 miles

Hope this helps :)
6 0
3 years ago
At 9 a.m. a car (A) began a journey from a point, traveling at 40 mph. At 10 a.m.
Kisachek [45]
At three hours as car a has already traveled a hour which making it three therefore making car b equal 2 hours or in a math equation 40×3=car b and 60×2=car a
5 0
3 years ago
Other questions:
  • Which point represents the outlier <br> A. (2, 3)<br> B. (4, 5)<br> C. (3, 13)<br> D. (8, 9)
    5·1 answer
  • 16.437 rounded to the nearest hundredth is 16.43. true or false
    13·1 answer
  • a triangle has side cequals6 and angles equals startfraction pi over 4 endfraction and equals startfraction pi over 3 endfractio
    15·1 answer
  • Can you help me find the LCM of 6 and 15
    8·2 answers
  • The age of james is twice that of Asia. after two years the sum of their ages will be 40 years what are the present ages of jame
    13·1 answer
  • Pls I need help with this math question.
    9·1 answer
  • Oliver is 33 years older than his son. Eight years ago, Oliver's age is five more than thrice his son's present age. How old is
    12·1 answer
  • What is the slope and point
    10·1 answer
  • -9x -2y=3<br> - 2x-y=-1<br> HELP ASAP
    5·1 answer
  • Helpppppppppppppppppppppppppppppppppppppppppppppppppppppp
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!