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
kotegsom [21]
3 years ago
10

4x-y=20 and -2x-2y=10

Mathematics
1 answer:
lara31 [8.8K]3 years ago
6 0

You can use Substitution to solve this problem:


4x-y=20

-y=-4x+20

y=4x-20


Now you have two equations, and you use the first one to substitute into the second one.


y=4x-20     and     -2x-2y=10


-2x-2(4x-20)=10

-2x-8x+40=10

-10x+40=10

-10x=-30

-x=-3

x=3


Now that we have figured out what x is, we can substitute x in to one of the equations to figure out y.


4x-y=20       x=3

4(3)-y=20

12-y=20

-y=8

y=-8



<em><u>So your answer would be x=3 and y=-8</u></em>

You might be interested in
CAN ANYONE HELP ME WITH THIS QUESTION...Plzz
Lelechka [254]

Answer:

AO and OC

x+8 and 16-x

x+8 = 16-x

x+x= 16-8

2x= 8

x= 8/2

x=4

DO and OB

2y+13 and 5y+4

2y+13 = 5y+4

2y-5y= 4-13

-3y = -9

y= 9/3

y= 3

Step-by-step explanation:

i hope this helps

if this helps let me know

5 0
3 years ago
Read 2 more answers
Can someone please help me answer this? i will mark you brainliest!!! i really need help plss
Klio2033 [76]

Answer:

3.5

Step-by-step explanation:

If you get more like this just divide the big triangle to the small one. on the same lengths. Example: on this one do 14/4 = 3.5, 10.5/3 = 3.5, 21/6 = 3.5

Hope this helps! :)

6 0
3 years ago
Write an equation of the line in slope-intercept form (0,-2) ,(2,2)
Kipish [7]

Answer:

y=2x-2

Step-by-step explanation:

Slope intercept Formula: y=mx+b

y= Y coordinate

m = slope

x = x coordinate

b = y intercept

Point Slope Formula: y-y1=m(x-x1)

Slope Formula: m= y2-y1 / x2-x1

2 - (-2) / 2-0 = 4 / 2 = 2

y- (-2) = 2 (x - 0) = y+2=2x-0

y=2x-2

3 0
3 years ago
Write P on the space provided for the two ratios are proportion and NP if it is not
balu736 [363]

Answer:

1 p

2 np

3 np

4 p

5 p

hoped that helped

5 0
2 years ago
john works at a grocery store and makes $11 amount of dollars an hour. how much will be in johns paycheck this week if he worked
Arlecino [84]

Answer: $352

Step-by-step explanation:

6 0
2 years ago
Other questions:
  • Determine where the function is increasing and where it is decreasing. (Enter your answers using interval notation. If an answer
    10·1 answer
  • Consumer reports stated that the mean time for a chrysler concorde to go from 0 to 60 miles per hour was 8.7 seconds. (a) if you
    14·1 answer
  • If t(n)=2n-3, is t(n)=54 a term sequence
    13·1 answer
  • Help PLEASE!!!! I REALLY NEED IT!!!!!
    15·2 answers
  • Identify the variation as direct, inverse, joint or combined.
    9·1 answer
  • Jose and a group of friends bought concert tickets for $257. The booking agency also charged a fee, bringing the total cost to $
    7·1 answer
  • 1) Write (5y)&lt;3 without exponents.​
    14·1 answer
  • HELP IM REALLY BAD AT MATH! The area of a square is calculated as 4x² - 16x+16 square units. What is the length of one side of t
    15·1 answer
  • Students who prefer rock or classic rock to students who prefer all other types of music​
    11·2 answers
  • Find the value of c that makes the trinomial a perfect square. .<br> x² – 24x7c
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!