Substitution method. Help!

Substitution Method. Help!

Answers

Answer 1

Answer:

(2, 2)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right  

Distributive Property

Equality Properties

Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of Equality

Algebra I

Terms/CoefficientsCoordinates (x, y)Solving systems of equations by substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

y = 3x - 4

2y = -x + 6

Step 2: Solve for x

Substitution

Substitute in y:                                                                                                  2(3x - 4) = -x + 6[Distributive Property] Distribute 2:                                                                 6x - 8 = -x + 6[Addition Property of Equality] Add x on both sides:                                   7x - 8 = 6[Addition Property of Equality] Add 8 on both sides:                                    7x = 14[Division Property of Equality] Divide 7 on both sides:                                  x = 2

Step 3: Solve for y

Substitute in x [Original Equation]:                                                                  y = 3(2) - 4Multiply:                                                                                                             y = 6 - 4Subtract:                                                                                                            y = 2

Related Questions


Reasoning There are 27 more green ca
in the parking lot. What percentage of
lot are green? What percent are black

Answers

hi  13% are black and 13% are green

What is the equation of the following line?

Answers

Answer: E

Hope this helped.

Which is NOT a line of symmetry?

Answers

Answer is 3. If you fold the triangle like the the point of the triangle will be hanging off the bottom bc it is not symmetrical.

pleasee helpp meeee with this problemmmm

Answers

Answer:

C

Step-by-step explanation:

Answer:

I'm going to say B

Step-by-step explanation:

I hope this helps! If right may I please have brainliest? :)

6=2(y+2)
I. Don’t get it

Answers

Answer:

1

Step-by-step explanation:

6=2*y+4

6-4=2*y

2=2*y

y=2/2

y=1

The national weather service reports the daily temperature in degrees
Fahrenheit. The scientific community reports temperature in degrees Celsius.
The formula F = 1.8C + 32 relates Celsius, C, to Fahrenheit F Solve the formula
for C.

Answers

Answer:

[tex]C =\frac{5}{9}(F - 32)[/tex]

Step-by-step explanation:

Given

[tex]F = 1.8C + 32[/tex]

Required

Solve for C

[tex]F = 1.8C + 32[/tex]

Subtract 32 from both sides

[tex]F-32 = 1.8C + 32-32[/tex]

[tex]F-32 = 1.8C[/tex]

Divide both sides by 1.8

[tex]\frac{1}{1.8}(F - 32) = C[/tex]

Express the decimal as fraction

[tex]\frac{1}{18/10}(F - 32) = C[/tex]

[tex]\frac{10}{18}(F - 32) = C[/tex]

Simplify

[tex]\frac{5}{9}(F - 32) = C[/tex]

[tex]C =\frac{5}{9}(F - 32)[/tex]


The age of a man is twice the sum of the ages of his two sons. Ten years ago, his age was five times
the sum of their ages. Find his present age.
a) 40 years
b) 50 years
c) 60 years
d) 70 years​

Answers

Answer:

suppose: the age of the man now is x

the sum of the ages of his two sons now is y

(x, y > 0, x, y € N)

so the age of the man 10 years ago is x - 10

the sum of the ages of his 2 sons ten years ago is

y - 20

because now, The age of a man is twice the sum of the ages of his two sons => x = 2y

because Ten years ago, his age was five times

the sum of their ages

=> x - 10 = 5( y - 20)

<=> x - 10 = 5y - 100

<=> 2x - 20 = 10y - 200

<=> 2x = 2y.5 - 180

but x = 2y => 2x = 5x - 180

<=> 3x = 180

<=> x = 60

=> his present age is 60

What is 696 divided by 12 and show your work please

Answers

Answer:

696/12

696/12 math problems division = 58. Therefore 58 to 2 decimal places= 58

696/12 divided by 2 » (696/12) ÷ 2 » 58 ÷ 2 = 29

Step-by-step explanation:

The answer is 58 mark me brainliest

Which figures are polygons? Select each correct answer.Figure A, Figure B, Figure C, Figure D​

Answers

Answer:

Figures A, B, and C are polygons

Step-by-step explanation:

Figure D is not a polygon because a polygon must consist only of straight lines, no curves

what is 20/3 in pounds

Answers

Answer: 6 2/3 pounds.

Step-by-step explanation:

Answer:

6 2/3 pounds

Step-by-step explanation:

very got on the bus at 4:20 P.M. The trip took 80 minutes. Then she walked for 49 minutes to get home. At what time did Avery arrive at home?

Answers

Answer:

6:29pm

Step-by-step explanation:

there 60min in a hour and that's what I got

Find two integers whose sum is 16 and product is 64​

Answers

Answer:

2

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

If ABCD is a parallelogram and angle A is 120 degrees, what is the measure of angle D?

Answers

the answer is 60. the second answer choice. 180-60=120.

Answer:

given angle A =120degree

angle D =60 degree

because angle A+angle B=180 degree

hope it is right answer for it!!

5 tons of compost cost $6,300.00. What is the price per pound?

Answers

Answer:

300 , is the answer

Step-by-step explanation:

Ticket sales for the next two days are 55 tickets and 68 tickets. Which statement about the data is true?



a
The range stays the same.
b
The range increases by two.
c
The range decreases.
d
The range doubles.

Answers

B cuz it says the answer

Ticket sales for the next two days are 55 tickets and 68 tickets. The range doubles. The correct option is d.

What is Range?

The range of a dataset is the difference between the highest and lowest values. The highest value here is 68, and the lowest value is 55. As a result, the range is 68 - 55 = 13.

The range in statistics refers to the difference between the highest and lowest values in a dataset. It is a measure of dispersion that indicates how dispersed the data is.

The range is a quick and simple way to determine how much variability exists in a dataset. It is, however, influenced by outliers or extreme values in the dataset.

The range doubles because the highest and lowest values are the same on both days.

Thus, the correct option is d.

For more details regarding range, visit:

https://brainly.com/question/29452843

#SPJ3


What is the oldest currency in use?
A. The yen
B. The pound sterling
C. The franc
D. The euro

Answers

B. the pound sterling

X-5(x-1)=2x-(2x-3) answer the question

Answers

Answer: x= 1/2

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

x−5(x−1)=2x−(2x−3)

x−5(x−1)=2x+−1(2x−3)(Distribute the Negative Sign)

x−5(x−1)=2x+−1(2x)+(−1)(−3)

x−5(x−1)=2x+−2x+3

x+(−5)(x)+(−5)(−1)=2x+−2x+3(Distribute)

x+−5x+5=2x+−2x+3

(x+−5x)+(5)=(2x+−2x)+(3)(Combine Like Terms)

−4x+5=3

−4x+5=3

Step 2: Subtract 5 from both sides.

−4x+5−5=3−5

−4x=−2

Step 3: Divide both sides by -4.

−4x /−4 = −2 /−4

x = 1/2

Answer : x = 1/2

Hopes this help .

Can someone please help me

Answers

Answer: 7 and 83

Step-by-step explanation:

complementary have an engles sum of  90 degree

7+83=90.

7 and 83!!!!!!!!!!!!!!!!!!!!!!

what does 1 4/9 - 1/2= to?

Answers

find a common denominator
1 4/18 - 1/18 change the numerator
1 8/18 - 9/18
u need to change 1 8/18 to an improper fraction
it would be 26/18 - 9/18
=18/18
which is 1 if u reduce

HELP NEEDED PLEASE HELP

There were some apples in a box. 12% of the apples were rotten.
There were 36 rotten apples in the box. How many apples were there
in the box?

Answers

Answer:

300

it is given that 12% were rotten

12% = 36

then let total no of apple be X

then , x*12/100 = 36

x= 36*100/12

x = 300

hence total apple were. = 300

hope it helps

300

If: 12 = 36
Then: 100 = X

X= 100*36/12 = 300

The diameter of a circle is 10 units. What is the radius of the circle? units​

Answers

Answer:

The answer is 5.

Step-by-step explanation:

Hope this helped Mark BRAINLEST!!!

Answer:

5

Step-by-step explanation:

1. Lisa drives her car 46 km south and then 13 km east.
How far is she from her starting point?
Show work

Answers

Umm maybe 59 kilometers

Can somebody plz help me with 6

Answers

Angle 1 is 75 since 75 and angle 1 are congruent and then angle 2 is
supplementary (two angle =180)
So 180-75=105
Angle 2 equal 105

The length of a cut board in a sawmill should be within 2% of the board’s length. Write an absolute value inequality that describes the length L of an acceptable board with an official length of 12 feet. Solve the inequality and summarize the answer using a complete sentence.

Answers

Answer:

d

Step-by-step explanation:

How many notebooks do you think it would take to make a stack that is 5 feet high?​

Answers

Answer:

There are total 30 books in the 5 feet high stack of books.

Step-by-step explanation:

The complete question is

Given, Each note book is 2 inches thick, How many notebooks do you think it would take to make a stack that is 5 feet high

Solution

Thickness of each book [tex]= \frac{2}{12} = \frac{1}{6}[/tex]

The total height of the book stack is [tex]5[/tex] feet.

The number of books in the stack is equal to total height of the stack divided by the thickness of one book

Number of books in five feet high stack is

[tex]\frac{5}{\frac{1}{6} } \\5 * \frac{6}{1} \\30[/tex]

Hence, there are total 30 books in the 5 feet high stack of books.

Write the decimal -0.43 as a fraction in simplest form.
Written as a fraction, the decimal -0.43 is

Answers

-0.43= -43/100 I think this is correct I don’t know if it can be simplified

Suppose that the water level of a river is 34 feet and that it is receding at a rate of
0.5 foot per day. Write an equation for the water level, L, after d days. In how many
days will the water level be 26 feet? -3x+4y=y

Answers

The answer is C I just took the test

Sarah makes small purses (x) and big purses (y). She can make no more than 8 purses a week. Which inequality represents the situation?

Answers

8 ≥ x + y OR x + y ≤ 8

Both inequalities above are the same so they would both be correct, doesn’t matter which you choose.

The inequality that represents this situation is x + y ≤ 8

Inequalities shows the non equal comparison between numbers or expressions.

Let x represent the number of small purses and y represent the number of big purses.

Given that She can make no more than 8 purses a week, hence:

x + y ≤ 8

The inequality that represents this situation is x + y ≤ 8

Find out more at: https://brainly.com/question/25285332

One year ago today the temperature was 3 degrees colder. Five years ago today the temperature was 15 degrees warmer. Select the inequalities that correctly express the relationship between the temperature one year ago today and five years ago today with respect to today's temperature.

Answers

Therefore , the solution of the given problem of inequality comes out to be x + 15 < x - 3  and x - 3 > x + 15

An inequality is what?

In mathematics, a connection or group of integers can be an inequality without the equal sign. Equilibrium  is always followed by equity. Inequality occurs when norms are still incompatible. Disparity and fairness have distinct traits. We chose to use the most typical symbol because components aren't always equivalent or similar to one another (). Any disparity, no matter how small or large, can also be used to evaluate values.

Here,

Let x represent the weather today.

The difference between today's temperature and last year's is three degrees, so last year's temperature was x - 3.

Since the weather was 15 degrees higher five years ago, the previous temperature was x + 15.

We can use the following language to describe the relationship between the temperature today and one year ago today but instead five years ago today with respect to the current temperature:

=> x + 15 < x - 3 (five years ago temperature is less least 1 year ago temperature) 

=> x - 3 > x + 15 (one year ago temperature is bigger than five years ago temperature) 

Therefore, the proper disparities are:

=> x + 15 < x - 3

=>x - 3 > x + 15

To know more about inequality visit:

https://brainly.com/question/29914203

#SPJ1

The cargo of the truck weighs at most 2,900 pounds. Use w to represent the weight (in pounds) of the cargo.

The cruising speed of the bullet train will be no less than 160 miles per hour. Use s to represent the train's cruising speed (in miles per hour).​

Answers

Answer:

hi peps

Step-by-step explanation:

Other Questions
Read the following passage. No! Science has toiled too long forging weapons for fools to use. It is time she held her hand. Let him find it out for himself again-in a thousand years time. What can be inferred from Cavors statement above? He will not be able to keep the secret. He is determined to find the sphere. He wants to escape from the cave. He will not return to earth. What is 30% of $15.00 ? Why did Jefferson believe the country was ready for a new revolution? which of the following is like a radical to 3 sqrt 6x2 ??? PLEASE HURRY 57 x 8.50 = 484.50 please show me the formula in doing it Work out the size of angle x.105to How might the actions of President Lula da Silva preservethe way of life of the indigenous people? B. Suspension c. SolutionD. Saturated solution5. Which is a solvent in a cup of coffee?A. coffeeB. creamerc. sugarD. water6. Why should you shake the liquid medicine before drinking?A. To make it effective. C. To mix the suspended particles at the bottom.B. To make it taste better. D. To make it clear.7. What should be done in a liquid medicine before drinking it?A. Drink right away after opening. C. Let it stand for 3 minutesB. Shake wellD. All of these8. Which of the following is called a universal solvent?A. water 8. gasoline C. juice D. dieselm-Directions: For items 1-5 What method are you going An equation is an expression without an equal sign? Lang Warehouses borrowed $196,401 from a bank and signed a note requiring 7 annual payments of $33,942 beginning one year from the date of the agreement. (FV of $1, PV of $1, FVA of $1, PVA of $1, FVAD of $1 and PVAD of $1) (Use appropriate factor(s) from the tables provided.) Required: Determine the interest rate implicit in this agreement. (Do not round intermediate calculations. Round interest rate to 1 decimal place.) Clean it up immediately To begin cleaning it up immediately In what order were the following energy sourcesdiscovered by humans Jonah tore the angles off a large paper triangle. Then he arranged the three paper angles with their points together so that there were no gaps and no overlaps. What kind of angle did Jonah form?A. acute angleB. right angleC. obtuse anglestraight angle pls help ill mark brainliest Extraversion, neuroticism, and psychoticism are three higher-order traits that make up Eysencks higher-order traits.Please select the best answer from the choices providedTF Can someone help me out with this one???!!! The diagram shows a pedigree for a recessive inherited trait. If H represents the dominant allele and h represents the recessive allele what are the genptypes of the parents shown in the pedigree. a- Rosa Parksb- Medgar Evansc- Ella Barkerd- Thurgood Marshall ( PLEASE HELP ASAP ILL GIVE BRAINLIEST) can someone please help me with this Write the expression in standard form. (Combine the like terms.)4 (32 + 4y) HELP PLS