у = 2х +7
y = x+8
using substitution

Answers

Answer 1

Answer:

(1, 9)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Equality Properties

Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtract Property of Equality

Step-by-step explanation:

Step 1: Define Systems

y = 2x + 7

y = x + 8

Step 2: Solve for x

Substitution

Substitute in y:                         2x + 7 = x + 8Subtract x on both sides:        x + 7 = 8Subtract 7 on both sides:        x = 1

Step 3: Solve for y

Define equation:                     y = x + 8Substitute in x:                        y = 1 + 8Add:                                         y = 9
Answer 2

Answer:

x = 1

y = 9

Step-by-step explanation:

y = 2x + 7 --------------------(I)

y = x + 8 ----------------------(II)

Substitute y = 2x + 7 in equation (I)

    2x + 7 = x + 8           {Subtract 'x' from both sides}

2x + 7 - x = 8                 {Combine like terms}

      x + 7 = 8                  {Subtract 7 from both sides}

           x  = 8 -7

x = 1

Substitute x = 1 in equation (I)

y = 2*1 + 7

 = 2 + 7

y = 9


Related Questions

You play the following game with a friend. You share a pile of chips, and you take turnsremoving between one and four chips from the pile. (In particular, at least one chip must beremoved on each turn.) The game ends when the last chip is removed from the pile; the onewho removes it is the loser.It is your turn, and there are 2014 chips in the pile. How many chips should you remove toguarantee that you win, assuming you then make the best moves until the game is over

Answers

Answer:

Each time, a person takes 1, 2, 3, or 4 chips. The strategy for a player to win the game is taking the number of chips so that the number of chips left is the form of 5k + 1 .

If It is my turn, and there are 2014 chips in the pile, I shoud take 3 chips and the left is 2011 (=5.k +1). And if the opponent takes x chips (x = 1, 2, 3, 4) , i win take 5 - x chips to guarantee the left is always in the form 5k + 1. And finally, the opponent will take the last chip.

Step-by-step explanation:

Each time, a person takes 1, 2, 3, or 4 chips. The strategy for a player to win the game is taking the number of chips so that the number of chips left is the form of 5k + 1 .

If It is my turn, and there are 2014 chips in the pile, I shoud take 3 chips and the left is 2011 (=5.k +1). And if the opponent takes x chips (x = 1, 2, 3, 4) , i win take 5 - x chips to guarantee the left is always in the form 5k + 1. And finally, the opponent will take the last chip.

You go out to eat and your bill is $12.34. You pay $15 to the waiter. How
much change will you get back?*

Answers

You will get back 2 dollars and 66 cents

Answer:

$2.66

Step-by-step explanation:

15.00

-

12.34

-----------

2 .6 6

xy(3x2+2x−3y)

(1 point)

3x3y+2x2y−3xy2

3x3+2x2−3y2

3x3+2xy−3y

2x3y2

Answers

Xy (3x2+2x-3y)

6xy + 2x^2y- 3xy^2

What values of x (if any) prove that the equation below is not a function?

y^2 + x^2 = 1

answer choices: Multiple, None, 0, 1, 2, 3

Provide explanations and/or computation.

Answers

Answer:

2 and 3

Step-by-step explanation:

for 0:y²=1,y=1

for 1:y²=0,y=0

for 2:y²=-3 r

for 3:y²=-8 and which is not a real number

y=−12x+ GRAPH PLEASE HELP OR BRIANLIEST GET RIGHT

Answers

Answer:

(0,0) (1,-12)

:)

Please help! What is 1500 times 4506 plus 134?

Answers

Answer:

6759134.

Step-by-step explanation:

Answer:

6759034

Step-by-step explanation:

Help please I’ll give you love :)

Answers

T and u are 63 and f is 134

What is the value of x?
110
11
22
19
30.4

Answers

Answer:

30.4

Step-by-step explanation:

Step-by-step explanation:

38/15.2=2.5

55/2.5=x

x=22

Helpp plzz picture above

Answers

Answer:

B. 1s and 2s

Step by Step Equation

Geometry !!! Pls help it’s timed!!

Answers

Answer:

the answer is the first choice .

Jace has to read 40 pages in his novel tonight. He has only read 8 pages so far. What percent of the pages has he read?

Answers

Answer:

The answer is 20 because 8 goes into 40 5 times as does 20 to 100.

Step-by-step explanation:

Answer:

20%

Step-by-step explanation:

someone pls help me!!!!

Answers

Answer:

C.

Step-by-step explanation:

1 X 26 = 26

2 X 26 = 52

3 X 26 = 78

how is tat algebra???

alex has 5 lizards he divides them equally among 5 cages how many lizards does alex put in each cage

Answers

Answer:

5 divided by 5 will be 1.

Step-by-step explanation:

Since Alex has 5 lizards and divides them in 5 cages then one in each will make it equal.

Answer:

Alex puts one lizard into each cage

Step-by-step explanation:

If Alex has 5 lizards and he divides them equally among 5 cages then the equation for that would be 5÷5.  

5÷5= 1   So the answer would be 1.

I hope this helps!

it takes two painters five hours to finish painting a house how long would it take to finish painting your house if they were 20 painters working at the same time

Answers

Answer:0.5 hours

Step-by-step explanation:

Given

It takes two painters 5 hrs to finish painting a house

Here, no. of painters and no. of working hours are inversely related

So, [tex]\text{no. of Painters}\times \text{no. of working hours=work}[/tex]

Work is the same in both the cases

[tex]2\times 5=20\times \text{no. of working hours(x)}\\x=\dfrac{10}{20}=0.5\ \text{hrs}[/tex]

It took Sam 324 minutes to cook an 18 pound turkey. How many minutes per pound did it take to cook the turkey?

Answers

Answer:

18 minutes per lb

Step-by-step explanation:

324 divided by 18 = 18

Pls help urgently extra points and mark brainlist easy reading

Answers

Answer: ravenous is a adjective

Step-by-step explanation: its the right answer giev me brainlist

What is the sum of the polynomials?

(8x^2 - 9y^2 - 4x) + (x^2 - 3y^2 - 7x)

* 7x^2 - 6y^2 + 3x
* 9x^2 - 6y^2 + 3x
* 9x^2 - 12y^2 + 3x
* 9x^2 - 12y^2 - 11x

Answers

Answer:

Option D

Step-by-step explanation:

(8x^2-9y^2-4x) +(x^2-3y^2-7x)

8x^2+x^2-9y^2-3y^2-4x-7x

9x^2-12y^2-11x

The sum of the polynomials is 4x² - 12y² - 11x. The correct answer is an option (D) 4x² - 12y² - 11x.

What is a polynomial?

A polynomial is defined as a mathematical expression that has a minimum of two terms containing variables or numbers. A polynomial can have more than one term.

The polynomials are given as follows:

(8x² - 9y² - 4x) + (x² - 3y² - 7x)

By combining like terms, we can add the polynomials:

(8x² - 9y² - 4x) + (x² - 3y² - 7x)

= 8x² - 4x² - 9y² - 3y² - 4x - 7x

= 4x² - 12y² - 11x

Therefore, the sum of the polynomials is 4x² - 12y² - 11x.

Hence, the correct answer is option (D) 4x² - 12y² - 11x.

Learn more about the polynomial here:

brainly.com/question/11536910

#SPJ7

HELPPPP PLSSSS GUYSSSS HELPPPP MEEE .

Answers

Answer:

  6                    2.83

    4                   2

Step-by-step explanation:

Cell Phone Company A has a cell phone plan with 4 phones for $65. The additional cost for data is 20 for 2GB, $30 for 4GB, and $40 for 6GB. Cell Phone Company B charges $60 for 4 cell phones and $10 for every GB up to 4GB, and then $20 for each GB thereafter. The Johnsons use 100 minutes a month with an unlimited talk and text plan. The Smiths use 250 texts with an unlimited talk and text plan. If the Smiths need 4 phones and want 4 GB, what is the better price from the cell phone company to contract with?

Answers

I think the answer is 21

Juan and Rob are selling cookie dough for a school fundraiser. Juan has t cookie dough orders, and Rob has 40 cookie dough orders. They have a total of 75 cookie dough orders all together.​

Answers

Answer:

Of the 75 orders, 40 orders correspond to Rob and 35 orders correspond to Juan.

Step-by-step explanation:

Given that Juan and Rob are selling cookie dough for a school fundraiser, having a total of 75 orders, of which 40 correspond to Rob, to determine how many orders correspond to Juan the following calculation must be performed:

75 - 40 = X

35 = X

Thus, of the 75 orders, 40 orders correspond to Rob and 35 orders correspond to Juan.

is 6 2/7 greater than or least than 9.3

Answers

Answer:

less than

Step-by-step explanation:

it’s less than 9.3 i believe

Do some quick math for me XD

Answers

Answer:

143

Step-by-step explanation:

i dont think im right so take the guy down there he prolly right...

Answer:

145

Step-by-step explanation:

1+1+2-3+8+3+1+9+9+3+1+9+9+9+3+(-18)-1-3+25+609+504= 145

Can someone please help me out? What's the answer to 4 1/2 plus 3 3/4 ?​

Answers

Answer:

8 1/4

Step-by-step explanation:

4 1/2 + 3 3/4   make the denominators the same

4 2/4 + 3 3/4   add the whole numbers

7 + 2/4 +3/4   add the fractions

8 1/4

Answer: 3

Step-by-step explanation:

I took 4 1/2 and made it an improper fraction which is 9/2 and then I took 3 3/4 and turned it into an improper fraction which is 15/4, so now you need to find the common denomerator which is 8 then you add the numerators which is 9 and 15 is 24 so can be divided by 8 so 24 divided by 8  is 3 and 8 divided by 8 is 1 so now you have another improper fraction 3/1 which is just 3. So that is how I got the answer!! :)

Enter the ordered pair for point A in the boxes.

Answers

-1.5, 2.5
X Y



Hdhdhfhd

help dont get this !!!

Answers

Answer: X less than of equal to 11/2

Explanation:

- 2(x + 3) = 10
Please help

Answers

-2x - 6 = 10

-2x = 16

-x = 8

x = -8

If GMAT scores for applicants at Oxnard Graduate School of Business are N(500, 50), then the top 5 percent of the applicants would have a score of at least (choose the nearest integer):

Answers

Cercel ben Türkçe biliyorum İngilizce ama ben de If GMAT scores for applicants at Oxnard Graduate School of Business are N(500, 50), then the top 5 percent of the applicants would have a score of at least (choose the nearest integer):derslerinde başarılar dilerim

what is 2/3x=-8 i need help plsss

Answers

This is your answer
Hope I got it right!!

Can someone help me expand this in log: log_3 x^2 yz and the picture above

Answers

Answer:

[tex]log_4(\frac{xy}{3})=log_4(x) + log_4 (y) - log_4 (3)[/tex]

Step-by-step explanation:

using the properties of logarithms, the log of a product gives the addition of logs, and the log of a quotient gives the subtraction of logs;

[tex]log_4(\frac{xy}{3})=log_4(x) + log_4 (y) - log_4 (3)[/tex]

the summer sports training camp has a maximum capacity of 250 student (s). if 85 have pre registered, then how many students can still participate?

Answers

Answer: x [tex]\leq[/tex] 165

Step-by-step explanation:

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