solve each system using the substitution method 6x-y=-4 and 2x+2y=15

Answers

Answer 1
Convert 6x - y = -4 into y = mx + b
Y - 4 = 6x
Y = 6x + 4
Substitute that into second equation
2x + 2(6x + 4) = 15
2x + 12x + 8 = 15
14x = 7
X = 1/2
6(1/2) - y = -4
3 - y = -4
-y = -7, y = 7
Final answer: x = 1/2, y = 7

Related Questions

Consider vectors u and v, where u = (1, -1) and v = (1, 1). What is the measure of the angle between the vectors?

Answers

Answer:

I believe the answer is C. 90 degrees

Step-by-step explanation:

First you find the lengths of the two vectors, which are both [tex]\sqrt{2}[/tex]. Then you find the angle given the cos using:   cos(∅)=[tex]\frac{u*v}{|u|*|v|}[/tex] = [tex]\frac{0}{\sqrt{2}*\sqrt{2} }[/tex] = 0. Then using ∅=acos(0)=[tex]\frac{\pi }{2}[/tex] = 90°

Answer:

c

Step-by-step explanation:

edge

What is the rise between the points (0,0) and (8, 12)?

Answers

Answer:

8/12 or x+8 y+12

Step-by-step explanation:

The rise between the points (0,0) and (8,12) is 12.

What is the slope?

The ratio of the vertical and horizontal changes between two points on a surface or a line is known as the slope.

Rise is the difference of y-coordinates of the points.

Therefore, the rise between the points (0,0) and (8,12) is:

12 - 0

=12

Hence, the rise between the points (0,0) and (8,12) is 12.

Learn more about slopes here:

https://brainly.com/question/3605446

#SPJ2

Company A charges $18 plus $0.15 per mile what is the rate per mile charged by company A​

Answers

Answer:

The rate is $18.15 per mile.

Step-by-step explanation:

Add $18 + $0.15 and it equals $18.15.

a que altura de cada molde quedara el litro de cera liquida?

Answers

Answer:

litros. TODO Cm. Calcula el volumen de cada figura compuesta. Redondea al ... Encuentra la altura h del recipiente a la décima más cercana. ... cubierto, haciendo que el nivel del agua suba 2 pulg.

expand (4x-2) (3x + 1)

Answers

Answer: i believe it is 12x²−2x−2

Step-by-step explanation:

(4x−2)(3x+1)

=(4x+−2)(3x+1)

=(4x)(3x)+(4x)(1)+(−2)(3x)+(−2)(1)

=12x²+4x−6x−2

=12x²−2x−2

hope this helps :)

Which equation matches the relationship shown in the table?

Answers

Answer:

s = 2r + 1.5

Step-by-step explanation:

Slope = 2

y-intercept: (0, 1.5)

Solve correctly and I’ll give brainliest.

Answers

Answer:

7

Step-by-step explanation:

-2 x 6 = -12

-6/1 ÷ -3/1 = 2

-12 - 2 = -14

-14 ÷ -2 = 7

Volume



03020020203tagmineyhi

Answers

The answer is C good luck

How many 0.1 slices of portabella mushroom will go on each boot long hoagie? 1.2 lbs of portabella divided by 0.4 lb

Answers

Answer:

3

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer is 4

1/4 of 36 bottles of water =

Answers

Answer:

9

Step-by-step explanation:

1/4x36=36/4=9

I think the answer is 9!!

In the picture below A II b and m<23
angle measures
112°. Find the remaining

Answers

Answer:

Step-by-step explanation: dude i think we in the same class for math

What are some real world examples of like terms?

Answers

Answer:

One twin and One twin have like terms, they're both twins.

HELP PLEASE
If X represents the number of pictures, write an equality to represent the situation!

Answers

Answer:

The Drama Club needs to sell more than 3 pictures to make a profit.

The inequality 10x ≥ 2.55x +25  represents the situation.

Step-by-step explanation:

Given that:

Rent for lighting equipment = $25

Price per print = $2.55

Selling price of one picture = $10

x be the number of pictures.

Selling price * No. of pictures sold ≥ Price of per print * pictures printed + rent

10x ≥ 2.55x +25

10x-2.55x≥25

7.45x≥25

Dividing both sides by 7.45

[tex]\frac{7.45x}{7.45}\geq \frac{25}{7.45}\\x\geq 3.35[/tex]

Hence,

The Drama Club needs to sell more than 3 pictures to make a profit.

The inequality 10x ≥ 2.55x +25  represents the situation.

Is the relationship a function yes or no?

Answers

Answer:

no because 3x nothing equals 14 and 4x nothing equals 18

hope this helps plz mark brainliest

Step-by-step explanation:

If y by itself what does that means?

Answers

Answer:

[tex]here \: y \: by \: itself \: means \\ \: y \: stands \: alone \: with \: \\ nothing \: nearby \: it .\\ \\ hope \: it \: helps..[/tex]

by itself means it’s alone. or there’s no one of nothing near

Please help me, i can't get this question wrong, please and thank you.

Answers

I believe the answer is D) the man is two (2) times smaller than the yeast cell.

Hope this helps✨❤️

lines l and m are parallel line i is represented by the equation 3x+4y=8 if line m passes through the point (2,-5) which equation represenrs line m

A y-5=-3/4 (x+2)
B y+5= -3/4(x-2)
C y-5= 4/3(x+2)
D y+5= 4/3(x-2)

Answers

Answer:

B

Step-by-step explanation:

because the math

I dint want you to answer can you just explain to me how I can answer this because my teacher doesn't explain ​

Answers

Answer:

Train B is traveling faster.

Step-by-step explanation:

To find which train is faster, divide the distance the train traveled by the elapsed time for each train:

Train A:

Distance traveled is 12.5 meters.

Elapsed time is 1 second.

12.5 ÷ 1 = 12.5

Train A travels 12.5 meters per second.

Train B:

Distance traveled is 100 meters.

Elapsed time is 4 seconds.

100 ÷ 4 = 25

Train B travels 25 meters per second.

25 is greater than 12.5, so train B travels faster.

I NEED HELP QUICK. GIVING BRAINLIEST TO QUICKEST CORRECT ANSWER.

The __________ states that the firing rate of neurons in the auditory nerve matches the frequency of the sound wave.

A. frequency theory

B. place theory

C. volley principle

D. auditory principle

Answers

Answer:

C. volley principle

Step-by-step explanation:

Which is the solution to this system of equations?
x - 2y= 15
2x + 4y = -18

Answers

The answer to your problem is 3 and -6

how do you explain HOW TO GET 10 x 2 - 3^2 + 4/2 -7= 6

Answers

Answer:

 ((x - (2x - 3)/(3x - 2))/(3x + 4)

and its fractional equivalent

       2x - 3

   x - ------

       3x - 2

   ----------

     3x + 4

it is easier to see the relation between the various parts, and how it

might be simplified, when you see it in the latter form. Notice that I

didn't have to use parentheses at all; that's because the bar serves

the double purpose of indicating division and of separating the

divisor from the dividend. In fact, this usage derives in part from an

old use of the bar (called a vinculum) to do what we usually do with

parentheses today, by putting a bar above any group of symbols that

are to be kept together:

Step-by-step explanation:

if wrong report me

What is the y-intercept of the function f(x) = -2/9x + 1/3x?

Answers

Answer:

Step-by-step explanation:

Tyler said he has finished reading 27% of his book. If the book has 200 pages, which number is closest to the number of pages Tyler has finished reading?​

Answers

Answer:

C

Step-by-step explanation:

If you do the math and get the right answer, your answer should be 54.

After that, it should be pretty easy to pick out the right answer.

So that's why the answer is C.

Hope this helped! :)

can some one help me on this and thank u

Answers

Answer:

2<x<3

Step-by-step explanation:

the first one

Maya's final score is 298.Which dancer has the greater final score?

Answers

Answer:

the question

Step-by-step explanation:

because it litterly has dancer and in the question it has the greater final score.

2(6-x)=3 please help

Answers

It’s impossible what are you doing Distributed property or solving for x?

Answer:

x = 4.5

Step-by-step explanation:

Let's solve this together!

First you would want to multiply 6 and x:

6×2 = 12

x×2 = 2x

Then you would want to subtract 12 from 3:

3+12 = 9

Then divide 9 by 2:

9÷2 = 4.5

x=4.5

That's it!

Hope this helped! :)

The manager of a store orders bookcases that cost $16 and sells them for $20. What is the
mark-up percentage?

Answers

Answer:

25 percent

Step-by-step explanation:

Answer:

56

Step-by-step explanation:

ndld

Complete the missing value in the solution to the equation:
6x + ==y + 2x
(3,

Answers

Answer:

(3, - 2)

given y = - 2, then

- 2x + 4 = - 2 ( solve for x )

subtract 4 from both sides

- 2x = - 6 ( divide both sides by - 2 )

x = -6/-2 = 3

have a wonderful day :)

-Ary

What is the value of g?
−5+7g=3g+9
A.) g=−1
B.) g = 1
C.) g=125
D.) g=312

Answers

Answer:

The answer is D

Step-by-step explanation:

Give the other person brainlest

Answer:

d

Step-by-step explanation:

i took the quiz


please help and don’t answer if you don’t know

Answers

Answer:

2 6

4 20

10 110

-3 6

5 30

7 56

1 2

[tex]rule \: \: y = {x}^{2} + x[/tex]

Step-by-step explanation:

First thing to do is look for a pattern with the current data. What I found was the pattern, ahich is the rule. See below.

[tex]y = {x}^{2} + x[/tex]

Now insert the given values for x and y into the rule.

[tex]y = - {3}^{2} - 3 \\ y = 6 \\ \\ 30 = {x}^{2} + x \\ x = 5 \\ \\ y = {1}^{2} + 1 \\ y = 2[/tex]

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