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
loris [4]
3 years ago
8

Solve system by elimination 6. 2x + 5y = 144x + 2 y = -4​

Mathematics
2 answers:
pishuonlain [190]3 years ago
7 0
Step by step:
Multiply the first one by -2 to be able to eliminate the x’s
-4x-10y=-28
Add them
-4x-10y=-28
4x+2y=-4
——————-
X’s cancel out your left with
-8y=-32
Divide by -8 to get y alone
Y= 4
Plug in for y to get x
4x+2(4)=-4
4x+8=-4
-8 -8
————-
4x=-12
x=-3
(-3,4)
forsale [732]3 years ago
3 0

Answer:

x=−3 and y=4

Step-by-step explanation:

Multiply the first equation by -2,and multiply the second equation by 1.

−2(2x+5y=14)

1(4x+2y=−4)

Becomes:

−4x−10y=−28

4x+2y=−4

Add these equations to eliminate x:

−8y=−32

Then solve−8y=−32for y:

−8y=−32

−8y

−8

=

−32

−8

(Divide both sides by -8)

y=4

Now that we've found y let's plug it back in to solve for x.

Write down an original equation:

2x+5y=14

Substitute4foryin2x+5y=14:

2x+(5)(4)=14

2x+20=14(Simplify both sides of the equation)

2x+20+−20=14+−20(Add -20 to both sides)

2x=−6

2x

2

=

−6

2

(Divide both sides by 2)

x=−3

You might be interested in
Solve the equation a-32=47 ? GIVING 30 BRAINLY'S!!
juin [17]

Answer:

a=79

Step-by-step explanation:

you do the math and search it up

3 0
3 years ago
Read 2 more answers
Please help if you want brianleist!! :) uhm don't mind update- NO LINkS child..
Katen [24]

Answer:

5/8

Step-by-step explanation:

total is 16

and point is on 10th line

therefore 10/16 is equals to 5/8

8 0
3 years ago
Read 2 more answers
(look at image) can someone explain to me how to do number 1
Rufina [12.5K]

Answer:

so it would be y= -4x + 3

Step-by-step explanation:

its asking to write the equation in slope-intercept form so y=mx+b m in this case is -4 and b whihc is the y-intercept is 3 so you just write the equation y= -4x + 3

5 0
2 years ago
Read 2 more answers
What is the AREA of 1 small square? and why?
Blizzard [7]
The answer is (LxW) every square is (LxW) it does not matter what size.
4 0
3 years ago
What is the mean for this list of numbers? 13, 26, 33, 45
olasank [31]
The mean is <span>29.25 but you need to round it so it would be 30 hope it helps <3</span>
4 0
2 years ago
Read 2 more answers
Other questions:
  • PLEASE HELP!!!!!!! The equation r = 6t gives the number of albums released, r, by a record label over time in years, t. If you g
    9·1 answer
  • Pls help it will mean alot!!<br> due rn!!
    8·2 answers
  • Describe the pattern below then find the next two numbers 547 54.7 5.47 0.547
    5·2 answers
  • Two-thirds of a number is negative six. Find the number. a) -9 b) -8 c) -4
    9·1 answer
  • There are 5 slots, each containing the letters W, R, L, D or O. One letter is picked at random from each slot. What are the odds
    12·1 answer
  • An animal shelter has a ratio of cats to dogs that is 9:7. What fraction of these animals are dogs?
    6·2 answers
  • A 3-column table with 4 rows. Column 1 is labeled Rectangle with entries A, B, C, D. Column 2 is labeled Width with entries 3 fe
    7·2 answers
  • Whats the vertex for y=2x^2 -4x-2
    14·1 answer
  • Write an ordered pair for the point in Quadrant IV that is 4 units away from point s (-1.5, -2.5) on the coordinate plane.
    12·2 answers
  • During a sale, Betty found swing sets on sale for $145 that had previously cost $500. What is
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!