x + 3y = 2
-x + 2y = 3
Can somebody help me?

Answers

Answer 1
x = -1 ; y = 1

x + 3y = 2, isolate x by subtracting 3y from both sides. Now that x is alone (because x = -3y + 2) take -3y + 2 and plug it into the second equation.

-(-3y + 2) + 2y =3 ; multiply what’s in the parenthesis by -1. It now is 3y -2 + 2y =3, add the common variables ( 3y + 2y) and you now have 5y-2=3. Move the 2 to the other side by adding it to both sides, you now have 5y=5, divide both sides by 5 and y=1.

Take any equation and plug y in for 1 to get x.

For example, (in the second equation), -x+2(1)=3, multiply 2 by 1 and you’re left with -x+2=3. Subtract 2 on both sides and you have -x=1, now divide both sides by -1 and x=-1.

You can check your work by plugging in the x and/or y values into the equations

Related Questions

Someone plz help me I will give brainliest

Answers

Answer:

pat

Step-by-step explanation:

2.75+3+2.5=8.25 pat

2+2.25+3.5=7.5 toby

8.25 > 7.5

Jeremiah missed 68 questions on his multiple choice history final and earned a grade of 66%. How many total questions were on the final exam?

Answers

Answer:

200 questions

Step-by-step explanation:

If he missed 68 questions and got a 66%, that means 68 is 34% of the total number of questions

To find the total questions, divide 68 by 0.34

68/0.34

= 200

So, there were 200 total questions on the final exam

Calculate the areas and perimeters of each shapes, start bu calculating any missing sides.

Answers

Answer:

Perimeter of A = 46cm

Area of A = 112cm^2

Perimeter of B = 61cm

Area of B = 118cm^2

Step-by-step explanation:

So there are two shapes. I divided one into 2 parts ( shape A ) . And the other into three ( shape B

Shape A:

PERIMETER = S + S +S +S + S + S + S + S ( THE SHAPE HAS 8 SIDES )

= 5 + 5 + 20 + 11 + 3 + 3 + 5 + 4 ( THIS INCLUDES THE MISSING SIDES )

= 46 CM

AREA- To find the area you divide the shape

Part 1 - 4* 3 = 12cm^2 Part 2 - 20 * 5 = 100cm^2

Final part ( add part a and b ) - 12 + 100 = 112cm^2

Shape B:

PERIMETER = S + S + S + S + S ..,........ (UNTIL YOU GET TO 12 SIDES PROVIDED THE SHAPE HAS 12 SIDES :) )

= 12 + 2 + 2 + 4 + 5 + 4 + 4 + 4 + 6 + 6 + 12 + 5

= 61 CM

AREA- To find the area you divide the shape

Part 1 - 12* 2 = 24cm^2 Part 2 - 4 * 3 = 12cm^2 Part 3 - 12 * 6 = 72 cm ^2

Final part ( add part a, b and c ) - 12 + 72 + 24 = 108cm^2

FOR MORE UNDERSTANDING PLEASE OPEN THE ATTACHMENT BELOW OR ASK ANY QUESTION.

HOPE THIS HELPED

__________ multiplied 20 = 360
full explanation answer required

Answers

18 x 20 = 360
360 / 20 = 18
So 18 is the answer
Awnser 18x 20= 360


Explanation is waki slush

Help! Will mark brainliest

Answers

Answer:

C. 162

Step-by-step explanation:

If you do 9 x 3 x 6... you will get 162

Hope this helps! stay safe

Answer:

162 m3

Step-by-step explanation:

9x3x6=162

Your welcome

Ned wrote the following statement:
"You can only draw one unique isosceles triangle that contains an angle of 80º."
Which statement is true? (1 point)

Answers

Answer:

You didnt show the statements...

Step-by-step explanation:

he two-way table shows the medal count for the top-performing countries in the 2012 Summer Olympics. A 5-column table has 5 rows. The first column has entries United notes, China, Russia, Great Britain, Total. The second column is labeled Gold with entries 46, 38, 24, 29, 137. The third column is labeled Silver with entries 29, 27, 26, 17, 99. The fourth column is labeled Bronze with entries 29, 23, 32, 19, 103. The fifth column is labeled Total with entries 104, 88, 82, 65, 339. Which statement is true? The probability that a randomly selected silver medal was awarded to Great Britain is StartFraction 17 Over 99 EndFraction. The probability that a randomly selected medal won by Russia was a bronze medal is StartFraction 32 Over 103 EndFraction. The probability that a randomly selected gold medal was awarded to China is StartFraction 88 Over 137 EndFraction. The probability that a randomly selected medal won by the United States was a silver medal is StartFraction 104 Over 339 EndFraction.

Answers

Answer:

The all-time medal table for all Olympic Games from 1896 to 2018, including Summer Olympic Games, Winter Olympic Games, and a combined total of both, is tabulated below. These Olympic medal counts do not include the 1906 Intercalated Games which are no longer recognized by the International Olympic Committee (IOC) as official Games. The IOC itself does not publish all-time tables, and publishes unofficial tables only per single Games. This table was thus compiled by adding up single entries from the IOC database.[1]

The results are attributed to the IOC country code as currently displayed by the IOC database. Usually, a single code corresponds to a single National Olympic Committee (NOC). When different codes are displayed for different years, medal counts are combined in the case of a simple change of IOC code (such as from HOL to NED for the Netherlands) or simple change of country name (such as from Ceylon to Sri Lanka). As the medals are attributed to each NOC, not all totals include medals won by athletes from that country for another NOC, such as before independence of that country. Names in italic are national entities that no longer exist. The totals of NOCs are not combined with those of their predecessors and successors.

Step-by-step explanation:

Answer:

17/99

_____________________________________

Total silver medals = 99

Great Britain's silver medals = 17

help as soon as possible plz

Stephen and Bridget win some money and share it in the ratio 4:1. Stephen gets £27 more than Bridget. How much did Bridget get?

Answers

Answer:

9

Step-by-step explanation:

4-1=3

3u--> 27

1u--> 9

Each pair of polygons is similar. Find the values of x and y.
7. 6
х
7
6
8.
9.
X
14
12
10
у
6
13
9
9
12
8
у
5
8
у

Answers

Answer:

I think..........

Step-by-step explanation:

x=5,11

y=8,8,11

help please, thanks!!!! :)​

Answers

Answer:

for x: 4.5

for y:

1. 9

2. 27

Step-by-step explanation:

Each time you multiply by 3

A hiking trail rises 6 feet for every horizontal change of 100 feet. What is the slope of the hiking trail?

Answers

Given:

A hiking trail rises 6 feet for every horizontal change of 100 feet.

To find:

The slope of the hiking trail.

Solution:

We have,

Rise = 6 ft

Run = 100 ft

We know that

[tex]Slope=\dfrac{Rise}{Run}[/tex]

[tex]Slope=\dfrac{6}{100}[/tex]

[tex]Slope=0.06[/tex]

Therefore, the slope of the hiking trail is 0.06.

The slope of the hiking trail is equal to 0.06.

Given the following data:

Vertical distance (rise) = 6 feetHorizontal distance (running) = 100 feet

To find the slope of the hiking trail, we would use the following formula:

Slope is the ratio of the vertical distance measured to the horizontal distance measured.

Mathematically, the slope of a hiking trail is given by the formula:

[tex]Slope = \frac{Rise}{Running}[/tex]

Where:

V is the rising vertical distance of an object.H is the horizontal distance an object runs through.

Substituting the given parameters into the formula, we have;

[tex]Slope = \frac{6}{100}[/tex]

Slope = 0.06

Read more on slope here: https://brainly.com/question/3514403

Please help! will give 30 points!

Answers

Answer:

Other needs =25,2 degrees

insurance = 100,8 degrees

Taxes= 7,2

Housing = 57,6

food= 57,6

childcare = 64,8

transportation = 46,8

Step-by-step explanation:

Its % of 360 degrees so you have to calculate the percentage of each categorie on 360 degrees to find the angles. Exemple, for the Other needs, you take 7% out of 360 degrees and you find that it is equal to 25,2. (7% x360 degrees /100)

Zoom in to see better
Blank one options: correct or incorrect

Blank two options: one-third, 3, one fourth, or 4

Blank three options: one fourth, 3, 4, one-third

Blank 4 options: one-twelfth, one-ninth, one-fourth

Answers

Answer:

1:Gavin is incorrect.

2:4

3: 1/4

4: 1/12

Step-by-step explanation:

Brainest for best answer only 5 mins left show your work

Answers

Answer:

258.75

Step-by-step explanation:

5x5=25

25x4.5=112.5

112.5x2.3=258.75

Answer:

Step-by-step explanation:

Formula

Area = 1/2 (b1 + b2)*h

Givens

b1 = 5

b2 = 11.5

h = 4.5

Solution

Area = 1/2 (5 + 11.5)* 4.5

Area = 1/2 (16.5)*4.5

Area = 1/2 (74.25)

Area = 37.125

help
til next level
plez lol
ima grind all day to get next lvl lolzz

Answers

Im sorry free answer haha...thx!

Answer:

you can do ittt

Step-by-step explanation:

Need help pleases what’s the answer

Answers

3/2is the answer

correct if wrong

What will you get if you do this

4x-3x+9=20

Answers

Answer:

This can be solved like this:

4x-3x+9=20

Solving 4x-3x

x+9=20

Transposing +9

x=20-9

And now we have, x=11

Answer:

x=11

Step-by-step explanation:

first solve the things you can simplify on one side of the equation:

4x-3x+9=20--->x+9=20

then, get the variables onto one side of the equation and numbers unto the other.

*minus 9 from each side*

x=11

Find the slope of the line passing through the points (-9,9) and (3,9).


Find the slope of the line passing through the points
(-9,9) and (3,9)

Answers

Answer:

[tex]\displaystyle m=0[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Algebra I

Coordinates (x, y)Slope Formula: [tex]\displaystyle m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Step-by-step explanation:

Step 1: Define

Point (-9, 9)

Point (3, 9)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

Substitute in points [Slope Formula]:                                                            [tex]\displaystyle m=\frac{9-9}{3+9}[/tex][Fraction] Subtract/Add:                                                                                    [tex]\displaystyle m=\frac{0}{12}[/tex][Fraction] Divide:                                                                                               [tex]\displaystyle m=0[/tex]

Answer:

This question has a slope of zero.

Step-by-step explanation:

When trying to solve a problem like this, what I recommend doing is subtracting the y value in the first ordered pair from the y value in the second ordered pair, and doing the same for the x values. To write it as a formula,

y2 - y1

––––– = m          the 2 in the formula means that the y or x value was from the  

x2 - x1                  second ordered pair. The 1 means it was from the first                                      

                            ordered pair. The m means slope.

Please help!! Thank you!

Answers

162 because ya I did that question

9. Write the equation that expresses the table below.

Answers

Answer:

y = 10x

Step-by-step explanation:

When x = 2, y = 20

When x = 5, y = 50

When x = 7, y = 70

In each of these examples, y = 10 * x.

The answer is y = 10x.

C=59(F−32)

The equation above shows how temperature F, measured in degrees Fahrenheit, relates to a temperature C, measured in degrees Celsius. Based on the equation, which of the following must be true?

A temperature increase of 1 degree Fahrenheit is equivalent to a temperature increase of 59 degree Celsius.
A temperature increase of 1 degree Celsius is equivalent to a temperature increase of 1.8 degrees Fahrenheit.
A temperature increase of 59 degree Fahrenheit is equivalent to a temperature increase of 1 degree Celsius.

solve please

Answers

Answer:

love how all our accounts got deleted. smh

Step-by-step explanation:

Trigonometry Practice

Answers

Answer:

33.9 (nearest tenth)

Step-by-step explanation:

180-90-32=58

x/sin(58)=40/sin(90)

x=40*sin(58)/sin(90)

x= 33.9

Juan has 240 marbles. This is three times as many marbles as Jon and Jeremy have combined. If Jon has 50 marbles, how many marbles does Jeremy have?

Answers

Answer:

30

Step-by-step explanation:

Let x = number of marbles Jon has

y = number of marbles Jeremy have

3(X + Y) = 240

3(50 + Y) = 240

Divide both sides by 3

50 + Y = 80

Solve for y

Y = 30


[tex]4 \times {8}^{x + 1} = {2}^{2x} [/tex]
Calculate the value of x​

Answers

Answer:

[tex] - 2[/tex]

Step-by-step explanation:

2^2×2^3(x+1)=2^2x

same base cancel,you will get

2+3x+3=2x

take same variable then - or + you will get

[tex]x = - 2[/tex]

Answer:

x=-5

Step-by-step explanation:

2^2×2^3(x+1)=2^2xsince they have the same Base we equat the exponents2+3(x+1)=2x2+3x+3=2x group like terms3x-2x=-3-2x=-5

What is -3/4(-5/9) ?

Answers

Answer:

5/12

Step-by-step explanation:

Answer:

D) -47/36

Step-by-step explanation:

Trust me.


Plz help will mark brainliest

Answers

Answer:

∠ A = 82°

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

A is an exterior angle of the triangle, then

∠ A = 49° + 33° = 82°

if x ≠ 0 then what is x^0?

Answers

Answer:

1

Step-by-step explanation:

Remember that anything to the 0th power is going to be 1 in terms of exponent rules!

Answer:

x

Step-by-step explanation:

because if you are dong it 0 times it would be just x (make sense?)

help me out with this pls (multiple choice)

Answers

Answer:

45 90 45 special triangle

y = 5 (45 sp triangle rule)

x = √50 = 5√2

answer: b

PLEASE HELP ME I BEG OF YOU PLEASE I REALLY NEED HELP

Answers

Answer:

Step-by-step explanation:

A line adds up to 180 degrees

180 - 81 = 99 degrees

Answer:

99 degrees

Step-by-step explanation:

These are Supplementary Angles:

Supplementary Angles are two angles that equal 180 degrees, this can be determine if the main line is a straight line, s for straight angle

A straight angle is 180 degrees, so simple subtraction:

180-81=99

I hope this helps!

please give thanks, maybe brainliest?

-11r + 88 = 77
Solve for r

Answers

Answer:

r=1

Step-by-step explanation:

77 - 88 = -11

-11/-11 = 1

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