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
faust18 [17]
3 years ago
13

−x − y = 1

Mathematics
2 answers:
Gemiola [76]3 years ago
5 0
<span>The system of linear equations

−x − y = 1
y = x + 3

can be solved in various ways.  This problem hints that you should graph both lines and find the coordinates of their point of intersection.

But we can also solve this system using substitution.  Note that y = x + 3.  We can subst. x + 3 for y in the 1st equation, as follows:

-x - (x+3) = 1.  This simplifies to -x -x - 3 = 1, or -2x = 4, or x = -2.

Since y = x + 3, subbing -2 for x produces y:  y = -2 + 3 = 1

Thus, the solution is (-2, 1). </span>
OLEGan [10]3 years ago
5 0
<span>−x − y = 1  so y = -x- 1
y = x + 3 
-x - 1 = x + 3
2x = -4
  x = -2

y = -2 + 3 = 1

(-2, 1)

answer
</span><span>(−2, 1)</span>
You might be interested in
How many ways can you arrange 10 numbers
kkurt [141]

Answer:

3628800

Step-by-step explanation:

There are 10 options for the first number.

That leaves 9 options for the second number.

That leaves 8 options for the third number.

So on and so forth.

The number of ways 10 numbers can be arranged is:

10×9×8×7×6×5×4×3×2×1

= 10!

= 3628800

8 0
3 years ago
Find the value of the variable What is x?
yaroslaw [1]

Answer:

x = 7

Step-by-step explanation:

I think there may be other ways to do this ... but this is one I  guess....

one angle= 90 ( given)

the other = 45 (given)

the third = 90 + 45 + a = 180  

(all angles of triangles is 180 [angle sum property])

                a = 180 - 135

                   = 45

The base angles are equal so that means it is a isoscles triangle. In isoscles triangle, two sides are equal ,  so

if one side is 7

the x is 7 too

(as it cant be the hypothenus)

I think this is right

5 0
3 years ago
What is 1.7 repeating expressed as a fraction in simplest form?
Nuetrik [128]
It is B, since it is B
7 0
3 years ago
Read 2 more answers
Simple, plz help! Need Plato answer
Nataly_w [17]
Factors of 121 are; 1,11, and 121. so it would be D.
7 0
2 years ago
Read 2 more answers
Could someone please help me on this question
xeze [42]

the answer is 8! hope that helps


3 0
3 years ago
Other questions:
  • Solve <br> 2x+y=7 for y<br><br> y=[]
    9·2 answers
  • What is the area of a circle whose radius is 20 meters
    14·1 answer
  • Find the percent of each number
    11·1 answer
  • Solve. Check for extraneous solutions.<br><br> (x-2)^(1/2) - (28 - 2x)^(1/4) = 0
    13·1 answer
  • Which of the following is the solution to |-2x-15|≤7
    8·1 answer
  • 1. A company produces batteries. On average, 85% of all batteries produced are good. Each battery is tested before being dispatc
    10·1 answer
  • Someone please help me with these. I forgot how to do these. Need within a hour
    12·1 answer
  • Two similar triangles are shown below
    5·1 answer
  • How do you write (4)(25)-300 as an addition equation
    11·2 answers
  • kerry and four friends want to the movies they purchased sodas costing $5.50 each and hotdog each cosing $12.75 they each contri
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!