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
aksik [14]
3 years ago
12

Solve the following system of equations 2x + y = 3 X = 2y - 1

Mathematics
1 answer:
pishuonlain [190]3 years ago
7 0

Answer:

x = 1 , y = 1

Step-by-step explanation:

Solve the following system:

{2 x + y = 3 | (equation 1)

x = 2 y - 1 | (equation 2)

Express the system in standard form:

{2 x + y = 3 | (equation 1)

x - 2 y = -1 | (equation 2)

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

{2 x + y = 3 | (equation 1)

0 x - (5 y)/2 = (-5)/2 | (equation 2)

Multiply equation 2 by -2/5:

{2 x + y = 3 | (equation 1)

0 x+y = 1 | (equation 2)

Subtract equation 2 from equation 1:

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

0 x+y = 1 | (equation 2)

Divide equation 1 by 2:

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

0 x+y = 1 | (equation 2)

Collect results:

Answer:  {x = 1 , y = 1

You might be interested in
How is the solution​
navik [9.2K]

Answer:

wdym what solution put the equation down so I can answer it 4 u

4 0
3 years ago
Read 2 more answers
HURRY QUICK!!
antiseptic1488 [7]

After plotting all the three points, we get the parabolic equation in the form is 2(x - 1)²-34.

<h3>What is parabola?</h3>

Any point on a parabola, which has the shape of a U, is situated at an equal distance from the focus, a fixed point, and the directrix, a fixed line.

General equation of the quadratic equation,

Y = ax² + bx +c

Given points,

(-2, 0),

(-1, -10),

(4, 0).

Putting the points in the general equation,

Putting (-2, 0), we get

0 = 4a - 2b + c

Putting (-1, -10), we get

-10 = a - b +c

Putting (4, 0), we get

0 = 16a + 4b +c

Solving all equations we get,

a = 2 , b = -4 , c = -16

After putting the values,

Y = 2x²- 4x- 16

2(x² - 2x - 8)

2(x²- 2x + 1 - 1 - 16)

=2(x - 1)²-34

Hence we get the required equation in the parabolic form.

To know more about parabola, visit :

brainly.com/question/21685473

#SPJ1

5 0
1 year ago
PLS HURRY! WILL GIVE BRAINLIEST AND POINTS
Keith_Richards [23]
He will have 7.75 left from the 20 dollar bill he spent
5 0
3 years ago
Read 2 more answers
I will mark branliest if correct
marishachu [46]

Answer:

I believe it would be 1

Step-by-step explanation:

6 0
2 years ago
I need help with a proof. i only need number 3, 6, &amp; 7. please help!!!
lesya692 [45]

Answer:

boottytff tgggfgv dugddcv

3 0
3 years ago
Other questions:
  • Picture with question
    14·1 answer
  • Please help, due today​
    5·2 answers
  • Una tienda de sándwiches sirve 4 onzas de carne de queso en cada sandwich. Después de una hora de hacer sándwiches, el dueño de
    11·1 answer
  • If f(x) = −2[x]+ 8, what is f(−1.8)?<br><br><br> 4<br><br> 6<br><br> 10<br><br> 12
    9·2 answers
  • Find the greatest common factor of 24 and 45.
    10·2 answers
  • Can someone please help me with this math question?
    15·1 answer
  • Solve. You must factor first.<br><br> 5x^2+ 17x+ 14=0<br> Please show work
    14·1 answer
  • 8. Is it possible to have an object that does not have 360° rotational symmetry? Explain your reasoning.
    9·1 answer
  • In 2010, the number of participants in a checkers tournament was 2.6 × 104 people. In 2013, the number of participants in a chec
    13·1 answer
  • I need help ASAP, please save me.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!