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
HACTEHA [7]
3 years ago
14

-2x + y = 0 -7x + 3y = 2 ​

Mathematics
2 answers:
Lerok [7]3 years ago
8 0

x=2,y=-4

Step-by-step explanation:

-2x + y=0 eqn 1

-7x +3y=2 eqn 2

multiply eqn 1 by 3

-6x +3y=0 eqn 4

-7x +3y=2

subtract eqn 3 from eqn 4

-6x +3y=0

-(-7x +3y=2)

x=-2 eqn 5

substitute eqn 5 into eqn 2

-7(-2)+3y=2

14+ 3y=2

3y=2-14

3y=-12

divide both sides by 3

y=-4

dsp733 years ago
3 0
This is a system of equations.
First, you set everything in terms of y.
Take the first equation and move set everything equal to y
y=0+2x
Since it’s 0, you don’t need to put it, so
y=2x works.
Then, you plug y=2x into the bottom equation, for the y.
-7x +3(2x)=2. You do this because now you have the same variable for both and it can be solved easily.
Then you can simplify.
-7x+3x = 2
Then combine like terms.
-4x = 2
Divide by -4 on each side.
x = -1/2
So, now that you have x, you can plug in your x-value back into the top equation.
-2(-1/2) + y = 0
Combine like terms
1+y=0
Get y by itself
y=-1
There you have it!
You can check by plugging in both values to any of the equations. We will use the top one here.
-2(-1/2) + (-1) =0
+1 + -1 = 0
It works!
So,
X= -1/2
Y= -1
Please rate me Brainliest answer :)
You might be interested in
Jackson bought 5 ounces of raisins for $4, how many ounces cna he buy for $1.
Zina [86]
He can buy 1 1\4 ounce for a dollar or 1.25 ounces or depending on your answer choice 1 ounce. All those answer are right
7 0
3 years ago
Read 2 more answers
What's a pair of equal ratios
Kruka [31]
Y= 2x + 2 and y= 2x - 1
8 0
3 years ago
Find the area of the parallelogram.<br> 3 yd<br> 9 yd
Firlakuza [10]
27 yd2 (b•h) it’s just like a rectangle
4 0
3 years ago
Read 2 more answers
85 on a 7-hour clock
mihalych1998 [28]

Answer.

Step-by-step explanation:

7 0
3 years ago
The equation of a line is -6x-2y=-18<br> What is the x-intercept of the line?
Fed [463]

 -6x - 2y = -18

-6x - 2(0) = -18

   -6x - 0 = -18

        -6x = -18

         -6      -6

           x = 3

hope this helps :)

8 0
3 years ago
Read 2 more answers
Other questions:
  • Simplify each expressions:<br> a) -72÷8+(-6)-2<br> b) -4+(-32)÷(-4×5)
    11·1 answer
  • A right triangle has one angle that measures 55°. What is the measure of the other acute angle?
    15·1 answer
  • 1 3/8kg - 2/3kg = does any one know this answer
    6·1 answer
  • What is equal to sin21
    6·1 answer
  • Rational or irrational 0.135135135135
    15·1 answer
  • Using the digits 1-9 each only once, create three equivalent ratios..
    7·1 answer
  • How to multiply fractions
    14·1 answer
  • A tie-dye kit with one T-shirt costs $15. Each additional T-shirt costs $4 more. Choose the explicit formula to represent the si
    9·2 answers
  • I need help its hard plz I'm trying to do a test and I need help plz I will give u 5 stars and a heart plz I have asked 6 times
    14·2 answers
  • Can someone help with this
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!