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Harlamova29_29 [7]
3 years ago
9

What’s the solution to -5x-y=21 when y is equal to 6+4x

Mathematics
1 answer:
agasfer [191]3 years ago
3 0

Answer:

x= -3, y=-6

Step-by-step explanation:

In the equation -5x-y=21, substitute y for 6+4x:

-5x- (6+4x) = 21

^^Solve for x.

X should come out to -3. To find y, plug -3 into either equation (-5x-y=21 or y=6+4x) and y should equal -6.

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I think of number, double it and add 11. I get 25 a) using the statement above, form an equation. Use the letter 'x' as a unknow
Misha Larkins [42]

Answer:

x = 7

Step-by-step explanation:

Let

x = the unknown number

double it :

2x

add 11:

2x + 11

I get 25:

The equation is

2x + 11 = 25

2x = 25 - 12

2x = 14

Divide both sides by 2

x = 14/2

x = 7

7 0
3 years ago
HEPL MEEEE<br><br> 1. 1/2(x+1)-1/3(x-1)<br><br> 2. x-2/3(x-1)
nikdorinn [45]

Answer:

1.  1/6x + 5/6

2. 1/3x + 2/3

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
6x - 5y = 15, x=y+3 what does x and y equal
Natasha_Volkova [10]

Answer:

Step-by-step explanation:

6x - 5y = 15....... (1)

x=y+3..........(2)

Putting (2) in (1)

6(y + 3) - 5y = 15

6y + 18 - 5y = 15

6y - 5y = 15 - 18

y = -3

And x = y + 3

x = -3 + 3

x = 0

3 0
3 years ago
Please Answer Quick 65 Points ! !
NeTakaya

The correct answers are:

  • The ordered pair (7, 19) is a solution to the first equation because it makes the first equation true.
  • The ordered pair (7, 19) is not a solution to the system because it makes at least one of the equations false.

Further explanation:

Given equations are:

2x-y = -5

x+3y = 22

We have to check whether the given statements are true or not. In order to find that we have to put the points in the equations

Putting the point in 2x-y = -5

2x - y = -5\\2(7) -19 = -5\\14-19 = -5\\-5 = -5

Putting the point in x+3y=22

7 + 3 (19) = 22\\7 + 57 = 22\\64 \neq 22

The point satisfies the first equation but doesn't satisfy the second. So,

1. The ordered pair (7, 19) is a solution to the first equation because it makes the first equation true.

This statement is true as the point satisfies the first equation

2. The ordered pair (7, 19) is a solution to the second equation because it makes the second equation true.

This Statement is false.

3. The ordered pair (7, 19) is not a solution to the system because it makes at least one of the equations false.

This statement is true.

4. The ordered pair (7, 19) is a solution to the system because it makes both equations true.

This statement is false as the ordered pair doesn't satisfy both equations.

Keywords: Solution of system of equations, linear equations

Learn more about solution of linear equations at:

  • brainly.com/question/13168205
  • brainly.com/question/1465430

#LearnwithBrainly

5 0
4 years ago
Jeene and her friends were selling cookies. They sold four more boxes second week in the than they did the first week . On the t
Georgia [21]

Answer:

i did 352 x 2 witch was 704 so i believe that it is 704 bc it said they sold double the sale of their second week

hoped this helped let me know if it did

8 0
4 years ago
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