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
Alexus [3.1K]
3 years ago
6

Solve by substitution: 5x+y=-13 and y=7

Mathematics
2 answers:
Ne4ueva [31]3 years ago
7 0

Answer: 4/7

Step-by-step explanation: Multiply each equation by the value that makes the coefficients of

y

opposite.

5

x

+

2

y

=

7

(

2

)

⋅

(

3

x

−

y

)

=

(

2

)

(

13

)

Simplify.

Tap for more steps...

5

x

+

2

y

=

7

6

x

−

2

y

=

26

Add the two equations together to eliminate

y

from the system.

5

x

+

2

y

=

7

+

6

x

−

2

y

=

2

6

1

1

x

=

3

3

Divide each term by

11

and simplify.

Tap for more steps...

x

=

3

Substitute the value found for

x

into one of the original equations, then solve for

y

.

Tap for more steps...

y

=

−

4

The solution to the independent system of equations can be represented as a point.

(

3

,

−

4

)

The result can be shown in multiple forms.

Point Form:

(

3

,

−

4

)

Equation Form:

x

=

3

,

y

=

−

4

Butoxors [25]3 years ago
5 0
The answer I got is X=6/5 y=7
You might be interested in
Which graph represents a linear function?
pshichka [43]

Answer:

y + 2x = 10 (third option)

Step-by-step explanation:

We can see that every time x increases by one, y increases by -2, meaning that the slope is -2.

We also know that the y-intercept is 10 because that is the value of y when x is equal to 0.

Now, we can create the equation using the slope-intercept form (y = mx + b, where m is the slope and b is the y-intercept).

y = -2x + 10

If you look at the third option, that equation is just a rearranged form of our equation (y + 2x = 10).

This means that the third option is correct.

7 0
3 years ago
Read 2 more answers
a circle with a radius of 1 cm sits inside a 3cm x 3cm rectangle. What is the area of the shaded region (the rectangle is shaded
masha68 [24]

Answer:

The area of the shaded region is 5.86\ cm^{2}

Step-by-step explanation:

we know that

The area of the shaded region is equal to the area of the rectangle minus the area of the circle

The rectangle is a square

so

A=b^{2} -\pi r^{2}

we have

b=3\ cm

r=1\ cm

assume

\pi =3.14

substitute the values

A=3^{2} -(3.14)(1)^{2}

A=5.86\ cm^{2}

5 0
3 years ago
Read 2 more answers
Select the correct answer from the drop-down menu.
Contact [7]

Answer:

The correct option is C.

C) -x + 2

Step-by-step explanation:

In mathematics, the term which is being divided is called a dividend. The term by which the dividend is getting divided is called a divisor. The quotient is the term we get after dividing the dividend by a divisor.

Here in this case, the dividend is written.

-x²    x    x

which in the equation form is written as

-x² + x + x

add the x terms to simplify

-x² + 2x

The divisor is given as x, divide the equation by x:

(-x² + 2x)/x

(-x²/x) + (2x/x)

-x+2

Which is the quotient.

4 0
4 years ago
Y
Vlad [161]

The single transformation from shape A to B is: dilate A by 1/2, followed by a 180 degrees rotation

<h3>How to determine the transformation?</h3>

From the figure, we have:

  • Shape A is twice the size of shape B
  • Both shapes can be rotated by 180 degrees in either direction to map onto the other, after dilation.

This means that:

The scale of dilation from shape A is:

k = 1/2

Hence, the single transformation from shape A to B is: dilate A by 1/2, followed by a 180 degrees rotation

Read more about transformations at:

brainly.com/question/11707700

#SPJ1

4 0
2 years ago
Read 2 more answers
A line passes through the points (-4,5) and (1,-5). Write the equation of the line in slope-
sweet [91]

Answer:

y = -2x - 3

Step-by-step explanation:

Slope: (5 - - 5)/(-4 -1) = 10/-5 = -2

y-intercept: 5 - (-2)(-4) = -3

4 0
3 years ago
Other questions:
  • Troy signed up for a new cell phone plan which charges him a fee of $40 per month, plus $0.05 for each text message that he send
    13·1 answer
  • If y varies inversely as x and y is 2.5 when x is 6, what is y when x is 4? a. 3.75 b. 1.67 c. 0.1 d. 7.5 Please select the best
    12·2 answers
  • What are the solutions of the equation
    11·1 answer
  • A sample from a group of people will not always be representative of the entire group true or false
    13·1 answer
  • If there were 5 million births in a particular country and 3 comma 375 sets of naturally occurring​ triplets, what is the experi
    9·1 answer
  • Amy makes the following statement:
    5·2 answers
  • I give brainlilset nxgbkj,m.d/ed<br> q
    10·1 answer
  • I’m having troubles finding the correct answer so I’m asking you guys. If this isn’t correct can you also tell me the correct an
    5·2 answers
  • The causes of land pollutions are​
    15·1 answer
  • What’s variance and how do I figure it oit
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!