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
lesya [120]
3 years ago
15

X=y-1 y=(4-2x) solve by substition

Mathematics
1 answer:
Nataliya [291]3 years ago
5 0
Since you have an equation equal to both x and y, you can either substitute the equation equal to x for x or the equation equal to y for y.
x=y-1
y=4-2x
I would substitute the y in using 4-2x
x=(4-2x)-1
x=3-2x
3x=3
x=1
Then plug in x and solve for y
1=y-1
2=y
You might be interested in
Which angles are acute?
mixer [17]

angles x y z are all acute because they are less than 90 degrees

]

4 0
3 years ago
Read 2 more answers
the graph of a liner relationship has a slope of -5 and passes through the point (2, -12). write tge equation of the liner in th
bixtya [17]

Answer:

y = -5x - 2

Step-by-step explanation:

equation formula: y = mx + c

m = -5

-12 = -5(2) + c

c = -2

⇒ y = -5x - 2

5 0
2 years ago
Solve a,b,c,d and e.​
Westkost [7]

Answer:

Step-by-step explanation:

a)

 428721

Place of 2's 10s and 10,000s

Therefore its value is 20 and 20,000

Product of the place value = 20 x 20,000 = 4,00,000

b)

37,20,861

Place of 7 is 1,00,000

Therefore the place value is 7,00,000

c)

Greatest 7 digit number is 99,99,999

Adding 1 to it = 99,99,999 + 1 = 1,00,00,000

d)

85642 = 80000 + 5000 + 600 + 40 +2

e)

round off 85642  to nearest thousand = 86,000

7 0
2 years ago
The Global Footprint Network is an organization dedicated to the advancement of environmental sustainability around the world. T
Alexus [3.1K]

Answer:

i don't get this sorry but i'm going to try ok thanks

Step-by-step explanation:

The answer is 69.1797

4 0
2 years ago
Solve the following system of equations:
Vladimir79 [104]

Answer:

<u><em>(-1,1)</em></u>

Step-by-step explanation:

We can solve this by either graphing and finding ther point the lines intersect, or mathematically,  I'll do both.

<u>Graphing:</u>

<u>Mathematically:</u>

−2x + 4y = 6

y = 2x + 3

See the attached graph.  The lines intersect at (-1,1)

--------------------

I'll rearrange the first equation (to make it easier for me):

−2x + 4y = 6

4y = 2x + 6

y = (1/2)x + 1.5

Now lets substitute the second equation into the first so that we can eliminate y:

y = 2x + 3

[(1/2)x + 1.5] = 2x + 3

- (3/2)x = (3/2)

x = -1

If x = -1:

y = 2(-1) + 3

y = 1

The solution is x = -1 and y = 1, or (-1,1)

=================

Both approaches give us (-1,1), the solution to the system of equations.  It is the only point that satisfies both equations.

3 0
1 year ago
Other questions:
  • Steve and josephina run a total of 42 miles in a week. Steve ran six fewer miles than josephina. How many miles did josephina ru
    6·2 answers
  • What is the name of the relationship between2and 7
    8·1 answer
  • So i need to do 3/2 times 5
    5·2 answers
  • Helene claimed that the expected value when rolling a fair die was 3.5. Steve said that wasn't possible. He said that the expect
    14·1 answer
  • X to the power of 2 plus Y to the power of 2 plus 4x-2y=1
    11·2 answers
  • Maya can run 18 miles in 3 hours, and she can bike 18 miles in 2 hours.
    5·1 answer
  • A plumber laying 500meters of drain pipe requires 20men working for 10days. What length in meters would be laid by 50men in 5day
    5·1 answer
  • PLZ HELP!!!
    7·1 answer
  • 9x -1 = 80<br> A -10<br> B 9<br> C 10<br> D -9
    8·1 answer
  • What is the effect on the graph of the function f(x)=x^2 when f(x) is changed to f(x+8)?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!