All categories

3 years ago

Use substitution to solve the system. y = 2x+8 -3x+2y = 13

Mathematics

1 answer:

Lisa [10]3 years ago

4 0

Step-by-step explanation:

Use substitution to solve the system.

y = 2x+8______equation1

-3x+2y = 13______equation2

sub y into equation 2

-3x+2(2x+8)=13

-3x+4x+16=13

x+16=13

x=13-16

x=-3

sub X into equation 1

y=2x+8

y=2(-3)+8

y= -6+8

y=2

x= -3 y=2

You might be interested in

HELP PLEASEEEEEEE 15 - 4x = 2(3x + 1)

bixtya [17]

Answer:

x = 1.3

Step-by-step explanation:

15 - 4x = 2(3x + 1)

15 - 4x = 6x + 2

-2 -2

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

13 - 4x = 6x

+4x +4x

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

13 = 10x

/10 /10

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

1.3 = x

6 0

3 years ago

Read 2 more answers

Can someone help me please !???

AfilCa [17]

Answer:

3 (x-12) (x+2)

Step-by-step explanation:

3 ( x^2 - 10 x - 24)

3 (x-12) (x+2)

Please mark for Brainliest!! :D Thanks!!

For more questions or more information, please comment below!

8 0

3 years ago

Find the equation of this line y = [?]x + [ ] Please help

larisa [96]

<h2>Writing an Equation of a Line in Slope-Intercept Form</h2><h3>Answer:</h3>

$y = [ -2 ] x + [ 1 ]\\$

<h3>Step-by-step explanation:</h3>

Please refer to my answer from this Question to know more about Slope-Intercept Form: brainly.com/question/24599351

We must first find the slope.

Please refer to my Answer from this Questions to know more about Slopes of a Line:

brainly.com/question/24640665
brainly.com/question/24638053

We can see the marked points, $(0,1)$ and $(4, -7)$ , are on the line.

Solving for the slope:

$m = \frac{y_2 -y_1}{x_2 -x_1} \\ m = \frac{-7 -1}{4 -0} \\ m = \frac{-8}{4} \\ m = -2$

Now we can now solve for the $y$ -intercept.

Please refer to the second paragraph of my Answer from this Question to know more about y-intercepts: brainly.com/question/24606058

We can see that the line intersected the $y$ -axis at $(0,1)$ so $b = 1$ .

5 0

3 years ago

The volume of a cube is V= S^3 where V is the volume and s is the length of one side what is the volume of a cube if the length

sammy [17]

The volume of cube is 1000 cubic feet

Solution:

Given that,

The volume of cube is given by formula:

$V = s^3$

Where,

V is the volume of cube

"s" is the length of one side

What is the volume of a cube if the length of a side s is 10 feet

Given, s = 10 feet

Substitute s = 10 in given formula,

$V = 10^3\\\\V = 10 \times 10 \times 10\\\\V = 1000$

Thus volume of cube is 1000 cubic feet

7 0

3 years ago

Carl and rita at breakfast at the local diner. Their bill came to $11.48. They gave their waitress a tip that wad 25% of the bil

WINSTONCH [101]

Answer:

(11.48*25%)+11.48

Step-by-step explanation:

4 0

3 years ago