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
OLga [1]
1 year ago
10

Solve the simultaneous equations 2x+y = 3 x+y=1

Mathematics
2 answers:
Murrr4er [49]1 year ago
8 0

Answer:

x = 2, y = -1

Step-by-step explanation:

Now change the equation,

→ x + y = 1

→ y = 1 - x

Then the value of x will be,

→ 2x + y = 3

→ 2x + 1 - x = 3

→ x = 3 - 1

→ [ x = 2 ]

Therefore, the value of x is 2.

Now value of y will be,

→ y = 1 - x

→ y = 1 - 2

→ [ y = -1 ]

Hence, the value of y is -1.

Crazy boy [7]1 year ago
8 0

Answer:

(2, -1)

-------

x = 2

y = -1

Step-by-step explanation:

<u>1st equation</u>:

  • 2x + y = 3

rewrite

  • y = 3 - 2x

<u>2nd equation</u>:

  • x + y = 1

rewrite

  • y = 1 - x

Solve simultaneously:

  • y = y
  • 3 - 2x = 1 - x
  • -2x + x = 1 - 3
  • -x = -2
  • x = 2

When x = 2, y = 1 - x

                    y =  1 - 2

                    y = -1

You might be interested in
Write the equation of the line passing through the (1,-2)
AleksAgata [21]
Theres information missing in the question. There should be one more pair of coordinates
8 0
3 years ago
Find the distance between the following points<br> R(-2, 3), S(3, 15)
aleksley [76]
Your answer will be: 13
5 0
2 years ago
What 5.871 5.781 is equal or lest or greater
RideAnS [48]
5.871 is greater than 5.781 because in the tenths place 8 is greater than 7. Also if you round the numbers to the nearest tenth, you get 5.9 versus 5.8
7 0
3 years ago
Read 2 more answers
And have to make payments twice a year on her health insurance if each payment is $2316 how much money should you budget for hea
Oduvanchick [21]
I think that is right I look it up and god bless have a great day
6 0
2 years ago
2. At the local park, there is an annual fair that
mafiozo [28]

Answer:

132 children and 88 adults

Step-by-step explanation:

let x represent the amount of kids and y represent the amount of adults.

since the problem says there was a total of 220 people at the fair an equation can be made

x+y=220

the problem tells that each childrens ticket was 1.5$ and each adult ticket was $4 and that a total of $550 was made that day, we can use the knowledge to make an equation:

1.5x + 4y = 550

using the equations we can make this systems of equations:

1.5x + 4y =550

x + y =220

solve the systems of equations by subracting y on both sides of th bottom equation:

x=220-y

since x is equivant to 220-y it can be substitued for x in the first equation to make this:

1.5(220-y)+4y =550

--solve for y--

y=88  - there were 88 adults

substute 88 for y in the second equation

x+88=220

--solve for x--

x=138 - there were 132 children

7 0
2 years ago
Other questions:
  • What is the geometric mean of 6 and 9
    7·2 answers
  • Hanna shops for socks that cost $2.99 for each pair and blouses that cost $12.99 each. Let x represent the number of pairs of so
    12·2 answers
  • Determine o valor de "m" para que o gráfico da função f(x)=3x-n-7 :
    10·1 answer
  • What is the area of the polygon?
    7·1 answer
  • What is -4 &gt; - 4/3 s​
    14·1 answer
  • If x=2 find y 5x-y=5
    12·1 answer
  • Please help ? Question 27 and question 28
    12·1 answer
  • Anyone good at 8th grade math please help out
    9·1 answer
  • What are the coordinates of the vertex of the graph of f(x) = 4|x + 6|?
    14·2 answers
  • Assuming there are no reflections or dilations explain how you would write the equation of the function whose graph is sketched
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!