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
Tanya [424]
2 years ago
11

Solve the system of linear equations by substitution. y=X-4 - 2x+y= 18

Mathematics
1 answer:
11Alexandr11 [23.1K]2 years ago
4 0

Answer:

] y=x-4

-2x+y=18

y - x = -4

y - 2x = 18

equation [2] for the variable y

[2] y = 2x + 18

// Plug this in for variable y in equation [1]

[1] (2x+18) - x = -4

[1] x = -22

// Solve equation [1] for the variable x

[1] x = - 22

// By now we know this much :

y = 2x+18

x = -22

// Use the x value to solve for y

y = 2(-22)+18 = -26

Step-by-step explanation:

please mark me as brainlist please

You might be interested in
????‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎
tatiyna

Answer:

1 and 3

Step-by-step explanation:

Part a: 1 and 3

part b: x = −22

<u><em>Please mark as brainliest </em></u>

Have a great day, be safe and healthy  

Thank u  

XD

8 0
2 years ago
Read 2 more answers
A car traveled at an average rate of 51 miles per hour on one highway. It then traveled at an average rate of 71 miles per hour
sergiy2304 [10]

d1 = 51(t)

d2 = 71(8 - t)

d1 + d2 = 508

and now you just have to solve for t.

3 0
2 years ago
3(6+4y)<br> hurry uppp pleaseeeee
Ahat [919]

Answer:

=12y+18

Step-by-step explanation:

=(3)(6+4y)

=(3)(6)+(3)(4y)

=18+12y

=12y+18

4 0
3 years ago
What is the answer of -6n-2n=16
mezya [45]

Answer:

n = - 2

Step-by-step explanation:

Given

- 6n - 2n = 16, that is

- 8n = 16 ( divide both sides by - 8 )

n = - 2

5 0
3 years ago
Read 2 more answers
801,504 round to the nearest thousand​
Gelneren [198K]

Answer:

802,000

Step-by-step explanation:

The number in the thousands place is 1, and the number to the right of it is 5. And if the number to the right is greater than or equal to 5 the place value that you are rounding goes up by one.

3 0
3 years ago
Other questions:
  • I need help badly please help !!
    15·1 answer
  • A tower that is 111 feet tall casts a shadow 126 feet long. find the angle of elevation of the sun to the nearest degrre
    8·1 answer
  • What is 15.40 rounded off to the nearest whole number
    14·2 answers
  • A rectangular field has an area 28800 sq meter. Its length is twice as long as its width. What is the length of its sides?
    14·1 answer
  • What is the approximate volume of a cone with a height of 9 fr and radius of 3 ft?
    15·1 answer
  • Helppppppp mathhhhhh
    7·2 answers
  • I don't understand parabola's ?
    9·2 answers
  • Connie collected 50 seashells during her 5 day vacation. Each day she collected 3 more than the previous day. How many seashells
    6·1 answer
  • Simplify 3x + 2(x - 7) + 11
    15·2 answers
  • Please help me if you can​
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!