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
What’s 4/5 divided by 3
Valentin [98]

Answer:

\frac{4}{15}

Step-by-step explanation:

remember when dividing with fractions, you are multiplying by the reciprocal.

this means

\frac{4}{5} \div3=\frac{4}{5}*\frac{1}{3}=\frac{4}{15}

6 0
3 years ago
Read 2 more answers
Area. Please help. I don’t understand the question.
photoshop1234 [79]

Answer:

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
If your car used 19.2 gallons of gas to go 1293.6 miles, how many miles per gallon (mpg) did the car get?
Anna007 [38]
G=m/x
G-gallons
m-miles
x-miles per gallon
19.2= 1293.6/x
x=1293.6/19.2
x= 67.375mpg
Therefore, the vehicle traveled 67.375 miles to 1 gallon
5 0
3 years ago
What is the slope of the line shown in the graph?<br> A 3/2<br> B) 2/3<br> C) -3/4<br> D) -2/3
garik1379 [7]

Answer:

D.

Step-by-step explanation:

y-intercept is (0, 3)

x-intercept is (4.5, 0)

formula to find the slope from two points is

slope = m =  \frac{y2 - y1}{x2 - x1}  =  \frac{y1 - y2}{x1 - x2}  \\

then the slope of the line that crosses (0, 3) & (4.5, 0) is

m =  \frac{3 - 0}{0 - 4.5}  =  \frac{3}{ - 4.5}  =  -  \frac{3}{ \frac{9}{2} }  =  -  \frac{2}{3}

6 0
2 years ago
Read 2 more answers
The video club to which Lin belongs allows her to receive one free DVD for every three DVDS she rents. If she pays $3 for each D
Nesterboy [21]

Answer:

12

Step-by-step explanation:

Given:

On every 3 DVDs she rents, 1 DVD is received for free

Rent of each DVD = $3

Total amount paid = $114

Now,

The total number of DVDs she took on rent = \frac{\textup{Total amount paid}}{\textup{Rent of each DVD}}

or

The total number of DVDs she took on rent = \frac{\textup{114}}{\textup{3}}

or

The total number of DVDs she took on rent = 38

also,

For every 3 DVDs she gets 1 Free DVD

thus,

For every 1 DVD she gets \frac{\textup{1}}{\textup{3}} free DVD

therefore,

For  38 DVD she gets \frac{\textup{38}}{\textup{3}} free DVD

or

she gets 12.67 DVDs free

Since,

the DVDs cannot be given in fraction

Hence she will get 12 free DVDs

5 0
3 years ago
Other questions:
  • Which statement is true about this data set? {79, 66, 82, 83, 84, 86, 85, 84, 84, 85, 88}
    11·2 answers
  • joan works for 6 hours each weekday and 8 hours total on the weekends. she earns $6 an hour on weekdays and $9 an hour on weeken
    6·1 answer
  • Five times the difference of a number subtracted from ten is forty. what is the number?
    6·1 answer
  • Write in expanded form 3.124
    6·2 answers
  • What is 4×4.Please HELP.
    5·2 answers
  • (12,-1),(-2,-3)<br> What is the finding slope?
    13·2 answers
  • Solve the equation 3/4 X+-2X=-1/4+1/2X+5​
    8·1 answer
  • Please help brainliest question give right answer!!!
    13·1 answer
  • Yucca Manor has sunny days for 80% of the year. If there are 365 days in a normal year, how many sunny days are there each year
    12·2 answers
  • Dustin completed 3/8 of a homework that has 32 problems. how many problems did he complete
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!