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
Genrish500 [490]
3 years ago
14

Solve the system of equations by substitution

Mathematics
1 answer:
scoundrel [369]3 years ago
7 0

Answer:

(x, y) = (1, 3)

Step-by-step explanation:

given the 2 equations

x + y = 4 → (1)

y = 3x → (2)

Substitute y = 3x into (1)

x + 3x = 4

4x = 4 ( divide both sides by 4 )

x = 1

Substitute x = 1 into (2) for corresponding value of y

y = 3 × 1 = 3

solution is (1, 3 )


You might be interested in
What is the solution to the system of equations graphed below?
MA_775_DIABLO [31]
B because that is where they intersect
5 0
3 years ago
Read 2 more answers
1. The perimeter of the square is f(x) = 4x, where x is the side of the square. Find the domain of the function.
Mkey [24]

If the perimeter of the square is 4x then the domain of the function will be set of rational numbers and the domain of the function y=3x+8(3-x) is set of real numbers.

Given The perimeter of the square is f(x)=4x and the function is y=3x+8(3-x)

We will first solve the first part in which we have been given that the perimeter of the square is 4x and we have to find the domain of the function.

First option is set of rational numbers which is right for the function.

Second option is set of whole numbers which is not right as whole number involves 0 also and the side of the square is not equal to 0.

Third option is set of integers which is not right as integers involve negative number also and side of square cannot be negative.

Hence the domain is set of rational numbers.

Now we will solve the second part of the question

f(x)=3x+8(3-x)

we have not told about the range of the function so we can put any value  in the function and most appropriate option will be set of real numbers as real number involve positive , negative and decimal values also.

Learn more about perimeter here brainly.com/question/19819849

#SPJ10

6 0
1 year ago
Read 2 more answers
Make an argument for why(4^2)4=(4^4)^2
cupoosta [38]

Questions is incomplete however from what i understand it is asking (4^2)^4 which can be made that the arguement of the function is  correct because its is the multiplication of radicals which however way you put it will equal the same

3 0
3 years ago
How would you express sin(-a-b)
tatuchka [14]

Answer:

-4-7

Step-by-step explanation:do 4 and 7

4 0
2 years ago
How do I find the next 2 terms of this geometric sequence? <br><br> -10, 40, -160, ?, ?
patriot [66]
The pattern is multiply by -4. So to find the next number. Multiply the previous one by -4. 
4 0
3 years ago
Read 2 more answers
Other questions:
  • How do you get 25 for the order of operations
    14·1 answer
  • Please help me thank you. :)
    6·1 answer
  • NEED HELP 10 POINTS
    10·1 answer
  • Which of the following is/are on a credit report ?
    12·2 answers
  • Simplify (6 + i)(8 − 3i).
    14·1 answer
  • If f(x) = 2(3x) + 1, what is the value of f(2)?
    14·1 answer
  • In the late 1800s, the Redeemers were a group of Southerners made up of O civil rights activists conservative Democrats. African
    15·2 answers
  • Convert 1 4/16 into a percent.
    6·2 answers
  • Copy the incomplete axes and fill in the missing number so that the scaling is consistent.
    11·1 answer
  • valerie has 20 stuff animals. she wants to store them in plastic bags. she estimates she can fit 3 stuffed animals in each bag.
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!