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
Bess [88]
3 years ago
10

Y=4x and 3x+y=-21. Substitute

Mathematics
1 answer:
gizmo_the_mogwai [7]3 years ago
5 0

value of x= -3 and value of y = -12

Solution set is (-3,-12)

Step-by-step explanation:

We need to solve the system of equations using substitution

The system of equations are:

y=4x\\3x+y=-21

Solving:

Let

y=4x\,\,eq(1)\\3x+y=-21\,\,eq(2)

Solving:

Putting value of y from equation 1 into equation 2

3x+y=-21\\3x+4x=-21\\7x=-21\\x=-21/7\\x=-3

So, value of x = -3

Now, putting value of x into equation 1 and find value of y

y=4x\\y=4(-3)\\y=-12

Value of y = -12

So, value of x= -3 and value of y = -12

Solution set is (-3,-12)

Keywords: System of equations

Learn more about system of equations at:

  • brainly.com/question/9045597
  • brainly.com/question/3739260
  • brainly.com/question/13168205

#learnwithBrainly

You might be interested in
Need help with this homework
Inessa05 [86]
A :
2.88/48 = $0.06 per ounce

B :
3.52/64= $0.055 per ounce
can be rounded to $0.06

C :
the container of 64 ounces for 3.52
or both are the same
8 0
3 years ago
Bonjour, aidez moi svp .c'est sur la 1er guerre mondiale 1914
Nikitich [7]

WHAT IS THIS LANGUAGE ? PLEASE TRY TO USE ENGLISH !

6 0
2 years ago
alex wants to buy the same number of stamps and envelopes dancer sold in packs of 14 and envelopes are sold and packs of 10 what
lianna [129]
5 packs of stamps and 7 packs of envelopes. There will be a total of 70 envelopes and stamps.
6 0
3 years ago
There are 120 boys in Morris middle school. What is the total number
AnnZ [28]

Answer:

121

Step-by-step explanation:

trust me i got you wuth that 2016 throwback

8 0
3 years ago
Read 2 more answers
HELPPP solomon gets 300 dollars for his birthday, His Uncle gives him 200 more, he then shares 2/3 with his brother his brother
gayaneshka [121]

Answer:

$323.33 Step-by-step explanation:

3 0
3 years ago
Other questions:
  • Use a graphing calculator and a system of
    9·1 answer
  • Will give 25 points for a good explanation/answer
    7·1 answer
  • Which of the following is equivalent to complex number i6 ?
    9·1 answer
  • What is the 25th term of this arithmetic sequence?
    7·1 answer
  • A microscope shows you an image of an object that is 20 times the objects actual size. Therefore, the scale factor of the enlarg
    12·2 answers
  • Kelly's basketball team made a total of 33 two points and three point baskets in their game last week. If her team scored a tota
    12·1 answer
  • HELP ME<br> HELP <br> ME<br> HELP<br> ME
    13·2 answers
  • A bakery sold 73 bagels in the first hour of business. If the bakery had 246 bagels to start with, how many bagels were left aft
    14·2 answers
  • Which of the following does not represent a function? <br>​
    12·2 answers
  • You and a group of friends participate in a game where you must use clues to escape from a room. You have a limited amount of ti
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!