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
lapo4ka [179]
2 years ago
8

Solve the following system of equations using the SUBSTITUTION method. Show all your work! x = 2y + 1 x + y = 4

Mathematics
1 answer:
Alexxandr [17]2 years ago
3 0

Answer:

Step-by-step explanation:

4x+y=14

x-2y=8

then;

x=8-2y

substitute;

4(8-2y)+8-2y=14

32-8y+8-2y=14

40-10y=14

26=10y

y=2.6 , work out 4x+2.6=14 to get x

You might be interested in
Which system of equations has one solution?
ehidna [41]

Answer:

A is correct, when two lines have 1 intersection (1 solution).

Step-by-step explanation:

B Two lines are parallel => No intersection (no solution).

C Two lines are coincident => Many intersection (many solutions).

Hope this helps!

:)

3 0
3 years ago
Read 2 more answers
a box holds nine smaller boxes. each of the smaller boxes holds nine plastic containers. each plastic contai.er holds nine bags.
svp [43]
So, basically ..you just multiply
9*9*9*9
6561
4 0
3 years ago
Solve for a.<br> ab+c=d<br> a =<br> b<br> (c-d)<br> Oa- (d-c)<br> b<br> oa=b+ с
anyanavicka [17]

Answer:

The answer is is the middle  answer! a= (d - c)

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

                                                                     b

Step-by-step explanation:

Hope this is helpful! Good Bless youu..

5 0
2 years ago
I need to find Domain and Range but how do I know when to use brackets or parentheses
german

Answer:

  • Square brackets [ or ] are used when the end point is included.
  • Parentheses ( or ) are used when the end point is not included.

Step-by-step explanation:

The domain is the horizontal extent of the graph. Here, it is from -2 to +3, with -2 included in the domain and +3 not included.

As an inequality, the domain is written ...

  -2 ≤ x < 3

In interval notation, we use a square bracket for the "or equal to" case:

  [-2, 3)

__

The range is the vertical extent of the function. Here, the range extends from -4 (not included) to +5 (included).

As an inequality, the range is written ...

  -4 < y ≤ 5

In interval notation, the range is written using a square bracket for the "or equal to" case:

  (-4, 5]

_____

<em>Comment on infinity</em>

There is no such thing as "equal to infinity" so an infinite limit is always represented in interval notation using a parenthesis.

3 0
3 years ago
How to show steps of distributive property with 8 * 34
Elza [17]

  8 * 34

= 8 * (30 + 4)

= 8 * 30   +   8 * 4

=  240     +     32

=            272

4 0
3 years ago
Other questions:
  • Define your variable and write an equation that models the cost of each bracelet. X
    9·2 answers
  • What is Five hundred million,one hundred fifteen written in standard form?
    12·2 answers
  • What is (2.1 10^3) (4 10^ 7)?
    14·1 answer
  • Does the table represent an exponential function?
    8·1 answer
  • Three highways connect the centers of three towns and form a triangle. A cell phone company wants to place a new cell tower so t
    12·2 answers
  • What is the weight of the piece of aluminum shown below at 0.0974 ​lb/​in^3? ​(Hint: Subtract the volume of the cylindrical​ hol
    12·1 answer
  • Plz help me please please
    6·1 answer
  • How much time will it take for an amount of Rs900 to yield Rs81 as interest at 4.5% per annum of simple interest
    7·1 answer
  • If x = a sin teta and y = b cos teta
    14·1 answer
  • 5.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!