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
kotegsom [21]
3 years ago
7

Solve the system of linear equations below.

Mathematics
2 answers:
Reika [66]3 years ago
8 0

Answer:

x = 1 , y = 3 thus: A is your Anser

Step-by-step explanation:

Solve the following system:

{2 x + y = 5 | (equation 1)

x + y = 4 | (equation 2)

Subtract 1/2 × (equation 1) from equation 2:

{2 x + y = 5 | (equation 1)

0 x+y/2 = 3/2 | (equation 2)

Multiply equation 2 by 2:

{2 x + y = 5 | (equation 1)

0 x+y = 3 | (equation 2)

Subtract equation 2 from equation 1:

{2 x+0 y = 2 | (equation 1)

0 x+y = 3 | (equation 2)

Divide equation 1 by 2:

{x+0 y = 1 | (equation 1)

0 x+y = 3 | (equation 2)

Collect results:

Answer:  {x = 1 , y = 3

Alla [95]3 years ago
5 0

Answer:

A. x=1, y=3

Step-by-step explanation:

Hello, I can help you with this.

step 1

use elimination to solve this

Let (1) and (2)

(1)2x+y=5

(2)x+y=4

do (1)-(2) to eliminate y and solve for x

2x+y=5

-(x+y=4)

_______

(2x-x)+(y-y)=5-4

x=1

using x= 1 replace in (1) and isolate y

(1)2x+y=5

x=1

2(1)+y=5

2+y=5 (subtract 2 on each side)

2+y-2=5-2

y=3

so, the solution is

A. x=1, y=3

I really hope it helps, Have a good day.

You might be interested in
100 POINTS PLEASE HELP ME 100 POINTS (make fullscreen)
Anit [1.1K]

Answer:

  • 1) 64, 2) 6, 3) 26, 4) 33

Step-by-step explanation:

<h3>#1</h3>

<u>Sum of interior angles is 180</u>

  • 70 + 46 + x = 180
  • 116 + x = 180
  • x = 64
<h3>#2</h3>

<u>Sum of interior angles is 180</u>

  • 84 + 7x + 1 + 9x - 1 = 84
  • 16x + 84 = 180
  • 16x = 96
  • x = 6
<h3>#3</h3>

<u>Vertical angles are same, the sum of remaining angles is same for both triangles:</u>

  • 35 + 25 = 34 + x
  • 60 = 34 + x
  • x = 60 - 34
  • x = 26
<h3>#4</h3>

<u>Exterior angle is same as the sum of non-adjacent interior angles:</u>

  • 5x - 7 + 6x + 3 = 84
  • 11x - 4 = 84
  • 11x = 88
  • x = 8
  • m∠G = 5x - 7 = 5*8 - 7 = 40 - 7 = 33
8 0
2 years ago
Read 2 more answers
HELP PLEASE HELP PLEASE
ICE Princess25 [194]

Answer:

a: about 800? nonfiction books in valley

b: valley and central has more fiction than nonfiction books

c: there's probably about 2600 books in hillside

Step-by-step explanation:

4 0
2 years ago
Estimate the perimeter and the area of the shaded figure to the nearest whole number
ollegr [7]

Answer:

See below ~

Step-by-step explanation:

<u>Perimeter</u>

  • 2(6 + 8)
  • 2(14)
  • <u>28</u> units

<u>Area</u>

  • 2(4 x 2) + 2(8)
  • 4(8)
  • <u>32</u> square units
7 0
2 years ago
5\12 +2/5 what is the answer
Ne4ueva [31]
5/12+2/5
4.167+0.4
4.567


It is the correct answer

If it helps you brainlest me plzzzz
3 0
3 years ago
Solve the following problem. Choose the correct answer. Ink, Inc., offers pencils at $1.10 per dozen, with a 1.5% discount for p
S_A_V [24]
The answer to the question

8 0
3 years ago
Read 2 more answers
Other questions:
  • If f(x) = x^2 + 1 and g(x) = 3x + 1, find 2f(1) + 3g(4)
    8·2 answers
  • What is the equation of the line that is parallel to the given
    5·1 answer
  • Suppose y varies as x, and y=16 wen x=8. find y when x=16
    11·1 answer
  • The cost of renting a jumping castle includes a fixed charge of $325 for setup and delivery, and a variable charge of $175 for e
    14·1 answer
  • Imagine you know the true length of a board to be 24 inches. measuring the board 10 times with instrument a, you find the measur
    10·1 answer
  • What is the volume and how is it measured? 3 1/4 ft 3 ft and 3 3/4 ft.​
    14·2 answers
  • Solve for the indicated variable<br>X = 5y ( for y )​
    8·1 answer
  • PlZ HELP I WILL GIVE BRAINLIST!!!!How can you write the expression 2-(p+6) in words
    13·1 answer
  • Solve the question.<br><br><br>​
    6·1 answer
  • 50×54+35-44<br>Simplification<br>no spam <br>steps must​
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!