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
iren2701 [21]
3 years ago
6

What is the solution to the above system of equations?

Mathematics
2 answers:
EleoNora [17]3 years ago
7 0

Answer:   A. (3,-2)

Step-by-step explanation:

Solve by Substitution :

// Solve equation [2] for the variable  x  

 

 [2]    4x = 5y + 22

 [2]    x = 5y/4 + 11/2

// Plug this in for variable  x  in equation [1]

  [1]    2•(5y/4+11/2) + 5y = -4

  [1]    15y/2 = -15

  [1]    15y = -30

// Solve equation [1] for the variable  y  

  [1]    15y = - 30  

  [1]   y = - 2  

// By now we know this much :

   x = 5y/4+11/2

   y = -2

// Use the  y  value to solve for  x  

   x = (5/4)(-2)+11/2 = 3  

Solution :

{x,y} = {3,-2}  

Phoenix [80]3 years ago
6 0

Answer:

1.B:(2,3)   2.C:4   3.B:(shaded on the right)   4.A:(x+y=7 6.50x+3.50y=33.50)  5.C:(3 quarters shaded at the top)  6.A:-4   7.C:6lbs(gc) 2lbs(jb) 5lbs(hc)    8.C:one solution    9.C:4x-7y=-12   -14x+4y=4   10.A:(3,-2)

Step-by-step explanation:

You might be interested in
Select the statement that is true. (2 points)
Yuliya22 [10]

Answer:

b is the answers for the question

Step-by-step explanation:

please mark me as brainlest

8 0
2 years ago
Read 2 more answers
Simplify.<br><br> 8 · 3 · x<br><br> 13x<br> 24x<br> 22x<br> 48x
Elina [12.6K]

8\cdot3\cdot x=(8\cdot3)x=24x

7 0
3 years ago
A solution is heated from 0°C to 100°C. Between 0°C and 50°C, the rate of temperature increase is 1.5°C/min. Between 50°C and 10
muminat

Answer:

0.6 °C/min

Step-by-step explanation:

The relationship between rates and movement is ...

time = distance/speed

Here, the "distance" is measured in °C, and the "speed" is the rate of change of temperature.

For the first half of the heating, the time required is ...

(50°C -0°C)/(1.5 °C/min) = 50/(3/2) min = 100/3 min

For the second half of the heating, the time required is ...

(100°C -50°C)/(4/10 °C/min) = 50/(4/10) = 125 min

Then the total time is ...

((100/3) +125) min = (475/3) min

And the average rate of temperature increase is ...

total temperature change / total time

= (100°C -0°C)/(475/3 min) = 300/475 °C/min = 12/19 °C/min ≈ 0.6 °C/min

4 0
2 years ago
Please help me with 168÷45​
velikii [3]

Answer:

3.73 ( The three is infinite)

Step-by-step explanation:

7 0
2 years ago
Someone please help me answer this question ​please and thank you.​
fenix001 [56]

Students collect cards with equivalent mathematical or verbal expressions on them to make books of cards.  A book is a group of 3 or 4 cards with either equivalent mathematical expressions or equivalent verbal expressions on them. When a player has at least 3 matching cards, he/she may lay down the book of cards.  The object of the game is to be the first to get rid of all the cards in your hand.

 

Preparation:  The teacher should print enough decks of cards so that one deck per group of 4 students can be distributed.

Shuffle the cards and deal out 7 cards to each player.  Place the remaining cards in a pile (the draw pile) in the center of the table.  Turn one card over to create the discard pile.

On his/her turn, each player will:

Either draw a card from the draw pile OR pick up the top card of the discard pile.  (A player may only pick up the top card of the discard pile if by doing so it creates a book that the player can lay down immediately or it is a card that can be added to an existing book on the table.) 

The player then examines his/her hand to see if there are any sets of three or four that can be laid down. If so, the cards are laid down on the table face up.

If the player does not have any groups to lay down, he/she may lay down a single card if that card can be added to another player’s book that has been laid on the table previously. 

If the player can not put down a book or a single card to add to an existing book, then the player’s turn is over.

At the end of each turn the player must place a card on the discard pile.  If this is the last card in his/her hand, then he/she is the winner!

Play moves to the left in a similar fashion until all the cars have been played or no other cards remain to be drawn and no player can go out.  At that point, the player with the least number of cards in his/her hand is the winner.

Variation:

Students collect cards to make books but can only add a card to a book they have placed on the table themselves.  At the end of the game, the player with the most books is the winner.

7 0
3 years ago
Other questions:
  • Angle GHI and angle JHI are supplementary. Angle GHI measures (28x + 40)° and angle JHI measures (7x)°. What is the measure of a
    11·2 answers
  • Someone help a sister out
    6·1 answer
  • Create a trinomial that can be factored and write it in standard form.
    9·1 answer
  • Tanya wants to order 50 pizzas for a party. However, the pizza supplier can deliver only 45 pizzas on the given date. How will y
    10·2 answers
  • Of the 80 house in a development, 50 have a two-car garage, 40 have an in-the-ground swimming pool, and 35 have both a two-car g
    15·1 answer
  • Players on a basketball team compared the total number of points they scored in a game. The results are shown on the circle
    5·1 answer
  • Vicky is renting an apartment.In addition to the first month’s rent, the landlord requires him to pay half of a month's rent as
    15·2 answers
  • Find the distance between the two points. (2, 4), (7, 2)
    5·1 answer
  • Examine the following piecewise function.
    5·1 answer
  • The executive summary component of a business plan is to describe
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!