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
Kipish [7]
3 years ago
8

Solve the system by substitution. 6x + 3y = -6 2x + y = -2

Mathematics
2 answers:
Mariana [72]3 years ago
8 0
Solutions 

First Lets solve for this equation 6x + 3y = -6
 

6x + 3y = -6
 

6x+3(-2-2x)=-6

 
 

-6=-6 

Therefore this given equation is a <span>dependent system. 
</span>
<span>Solve for </span>2x + y = -2 

2x+y=-2 

y=-2-2x&#10;&#10; &#10;&#10; &#10; 

There are too many solutions to these equations. 


Simora [160]3 years ago
5 0
6x + 3y = -6
2x + y = -2

Solve both equations for the same variable, in this case, I'll solve for y.

2x + y = -2   Subtract 2x from both sides
y = -2x -2

6x + 3y = -6         Subtract 6x from both sides
        3y = -6x -6   Divide both sides by 3
          y = -2x -2  

Once you have them solved you can set them equal to each other and solve.

-2x -2 = -2x -2 

But, these two equations are the same, so any number you put in for x will work. The answer to the system is infinite solutions.

You might be interested in
PLEASE HELP! Urgent!!!
zaharov [31]

Answer:

\frac{9}{2}\pi +35

Step-by-step explanation:

The area of trapezoid is given by the formula:

A=\frac{1}{2}(b_1+b_2)h

Where

A is the area

b_1 is base 1

b_2 is base 2, and

h is the height

Looking at the figure, base 1 is the left line which goes from y = 3 to y = 3, so 6 units. Also, base 2 is the right line which goes from y = -3 to y =5, so 8 units.

The height is the horizontal distance in the middle, which goes from x = -2 to x = 3, so 5 units. Hence area of trapezoid is:

A=\frac{1}{2}(b_1+b_2)h\\A=\frac{1}{2}(6+8)*5\\A=35

Now, area of semicircle is:

A=\frac{\pi r^2}{2}

Where

A is the area

r is the radius

Looking at the figure, the diameter (twice radius) goes from y = -3 to y = 3, so 6 units. But radius is half of that, so 3 units. Hence area of semicircle is:

A=\frac{\pi r^2}{2}\\A=\frac{\pi (3)^2}{2}\\A=\frac{9}{2} \pi

Total area of the figure is \frac{9}{2}\pi +35

4 0
3 years ago
(4 x 5)2 - 6 + 3 = ?
Mamont248 [21]

Answer:37

Step-by-step explanation:You multiply the ones that are in the parenthes

6 0
3 years ago
Read 2 more answers
School sold 2 adult tickets and 10 child tickets for a total of $56. The school took in $52 on the second
pochemuha

Answer:

x+y=4+8=12

$12 for one of each

or if you mean indivually (the wording confused me)

$4 for child, $8 for adult

Step-by-step explanation:

x=adult

y=child

2x+10y=56

4x+5y=52

iin order to be able to subtract values and find x and y im going to multiply 4x+5y=52 by two and get 8x+10y=104

8x+10y=104

-2x+10y=56

6x=48 divide each side by 6

x=8

plug 8 back into an equation to find cost of y

2(8)+10y=56

-16            -16

10y=40

y=4

6 0
3 years ago
Чу- 8х + 5x - Зу<br> OOoO
natulia [17]
Y-3x

Explanation: do 4y-3y which equals 1 which just equals Y. Then do -8x+5x which equals -3x
3 0
3 years ago
Read 2 more answers
Which value for the number makes the statement true? the quotient of a number and five is 8. a-4, b-8, c-40, d-80
Inga [223]
The letter is c because you divide 40 by 5 = 8
6 0
3 years ago
Other questions:
  • David has 20 coins he gave some coins to Peter David had 8 coins left. How many coins did David give to Peter?
    10·1 answer
  • suppose you walk at the rate of 210 ft per minute you need to walk 10000 feet how many more minutes will it take you to finish i
    10·2 answers
  • Express each ratio as a fraction in the simplest form.<br> 1) 8 cups to 36 cups
    14·2 answers
  • Does anyone know how to solve this ?
    5·2 answers
  • A) 2x - (x - 3) = 5<br>​
    8·1 answer
  • Soft drinks cost $1.89 and refills cost $0.25 each. With $3.80 to spend on the soft drink and refills, what is the maximum numbe
    7·1 answer
  • What is 4 times as many as 8?
    5·2 answers
  • QUICK!!! 10 points and most brainliest!!!!
    11·2 answers
  • 4x + 5 = -15 they want me to put more letters but I need help with the math
    5·1 answer
  • Complete the set of ordered pairs for the relation.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!