Solve using elimination. -2x+2y=2, 2x-y=4.

Answers

Answer 1

Answer:

y=6

x=5

Step-by-step explanation:

x=(y+4)/2

-2(y+4)/2+2y=2

-y-4+2y=2

y-4=2

y=6

x=(6+4)/2

x=5


Related Questions

Plz need help it’s due today

Answers

A-no
B-yes
C-yes
D- yes

HELPP ITS DUE IN 10 MINUTES!!!!!

Answers

Answer:

a is less than or equal to 35 since 35 is the highest value that can be gotten

I need help fast... Identify the scatter plots as linear association, nonlinear association,or no association.​

Answers

Answer:

1 non linear

2 linear

3 no association

4 linear

5 non linear

6 no association

I will answer any questions you have

Answer:

linear: Bottom left, and middle top

nonlinear: Bottom middle, top left

no association: top right, bottom right.

Step-by-step explanation:

Linear is like a line it stays close together like a line of ants

nonlinear is curves- like a snake

no association is spread out, like a paint splatter

A class collects data on the number of movie tickets purchased and the total cost of those tickets. The class plots the data on a scatter plot. Which statement BEST interprets their results?

A.
There is likely to be correlation between the number of movie tickets purchased and the total cost of those tickets but not causation.

B.
There is likely to be both correlation and causation between the number of movie tickets purchased and the total cost of those tickets.

C.
There is likely to be neither correlation nor causation between the number of movie tickets purchased and the total cost of those tickets.

D.
There is likely to be causation between the number of movie tickets purchased and the total cost of those tickets but not correlation.

Answers

Answer:

Step-by-step explanation:

There is likely to be correlation between the number of movie tickets purchased and the total cost of those tickets but not causation.

'There is likely to be correlation between the number of movie tickets purchased and the total cost of those tickets but not causation.' This statement best interprets their results.

What is correlation?

It is a relationship between two variables or events. However, one  variable doesn't actually cause the other.

What is causation?

Causation can be applied on two events or variables where variable 2 causes the variable 1.

The class collects data on the number of purchased and the total cost of those tickets.

Let, for a particular time period, this observation is recorded.

Hence, the number of movie tickets purchased and the total cost of those tickets this must be correlation. It can't be causation. Option: A is right.

Learn more about correlation and causation here: https://brainly.com/question/10971583

#SPJ2

solve for k. -5/6k = -10

Answers

Answer:

k = 12

Step-by-step explanation:

-5/6k = -10

Multiply both sides by 6k

-5/6k x 6k= -10 x6k

simplify

-5 = -60k

Switch sides

-60k = -5

Divide both sides by -60

-60k/-60 = -5/-60

Simplify to get your answer of

1/12 or 12

If you have any questions revolving around this topic,feel free to ask me :)

Three children shared some
sweet in the ratio of their ages.
The chilren are 4, 7, and 9 years
old. The oldest child gets 54
sweets
How much sweets did they have
altogether:​

Answers

Answer:

120

Step-by-step explanation:

4x, 7x, 9x

9x=54

we need to find 4x+7x+9x

9x=54⇒x=6

4x+7x+9x=20x=20×6=120

Answer:

120 sweets

Step-by-step explanation:

4:7:9

Total Parts = 4+7+9=20

Oldest(9)= 9/20

9/20P= 54 Sweets

Total Sweets = 54/ (9/20) =120

Solve the triangle, round answers to the nearest tenth.

Answers

Step-by-step explanation:

to get DE nd also EF u can use the cosine rule since two angles and a side has been given

and to get the angle at D since we know ∆=180 then u add up the angles given then u subtract from 180

What is the slope of the line?

Answers

Answer:

The slope is 1/3

Step-by-step explanation:

you go up one whole unit and to the right 3 whole units.

Answer:   Its Just a line  explaning  how it is long

Step-by-step explanation:

the line rpresents all

what is the difference between 479,310 and 214,991?

Answers

264, 319 is the answer if you subtract 479, 310 from 214,991

Answer:

264,319

Step-by-step explanation:

A difference is a subtraction problem.

Subtract 214,991 from 479,310.

479,310 - 214,991 = 264,319

Your challenge . . . Part 1: Your math class is celebrating McNugget Monday and needs to order 531 Chicken McNuggets. If they are sold in packages of 4, 6, 9 and 20, determine TWO possible ways that 531 Chicken McNuggets can be ordered. Be sure to verify your answer.

Part 2: If McDonalds stop making the 6 pack, is there a largest number of Chicken McNuggets that cannot be purchased? If so, what is the number? If not, explain why not?

Answers

Answer:

You can get 25 packs of 20 and 3 packs of 9 and 1   4 piece.

OR

59 packs of 9 pieces

PART 2-

No because you can still get a 9 piece and 20 piece.

Step-by-step explanation:

Answer:

24 packs of 20=480

3 packs of 9=27

2 packs of 6=12

3 packs of 4=12

480+27+12+12=531

22 packs of 20=440

8 packs of 9=81

1 pack of 6=6

1 pack of 4=4

440+81+6+4=531

Step-by-step explanation:

Which one is larger: The surface area of a sphere with
radius r inches or the combined area of three circles
each of radius r inches? How do you know?

Answers

Answer:

Step-by-step explanation:

formula for surface area of a sphere is

A = 4πr^2

for a circle the area is

A = πr^2

notice they are the same except for the 4 in front of the sphere... so which do you think is bigger

3 circles or 1 sphere.. that all have the same  "r"  ???

it's the sphere.. if you're really not sure

Quick maths question please help

Answers

Answer:

U have to add it all up

10+4+5+8+12=39..

Answer:

You have to break it up by two

Shape 1 : 10cm x 8cm x 7cm

Shape 2: 4cm x 5cm x 8cm

I wish I can

The first two angles in a triangle are 90 degrees and 50 degrees. What does the third angle have to be?

A. 20 degrees
B. 40 degrees
C. 50 degrees
D. 90 degrees

Answers

Answer:

B) 40 degrees

Step-by-step explanation:

90 + 50 = 140

Each triangle have 180 °

180 - 140 = 40

What is the name?

Help please

Answers

Answer:

Tangent

Step-by-step explanation:

GE has only one point of contact with the circle at F

The line GE is therefore a tangent

Answer:

Tangent

Step-by-step explanation:

i took it

Consider the graphs of functions f(x) and g(x). Use the drop-down menu to complete the statement. On the interval 3≤x≤∞, function Choose... has a greater rate of growth.

Answers

Answer:

g(x) has the greater rate of growth

Step-by-step explanation:

Find the perimeter of the square. (hint : make one side = to the other side to find y. Remember, you are finding the perimeter)

Answers

Step-by-step explanation:

[tex]5y = 4y + 3 \\ y = 3 \\ p = 4 \times a = 4 \times 3 = 12[/tex]

Helllllllpppppp me plz

Answers

Answer:

90 degrees

Step-by-step explanation:

Answer:

x=103

Step-by-step explanation:

sum=(n-2)*180

sum=(6-2)*180

sum=4*180

sum=720

90+155+112+120+140+x=720

617+x=720

x=720-617

x=103

4. What is the value of .r in the figure shown
below?
록​

Answers

Answer:

100

Explanation:

Triangle’s angles add up to 180

180 - 65 - 35 = 80

Since a straight line is also 180, subtract 80 from it.

180 - 80 = 100

Help me please! Write the measure of angles a, b, c, d, e, f, and g for the figure below.
I need help and answers. NO LINKS PLEASE! Thank you! I'll give 10 points and brainliest.

Answers

Answer:

a=55

b=55

c=125

d=125

e=55

f=55

g=125

Step-by-step explanation:

Answer:

∠a = 55°, ∠b = 55°, ∠c = 125°, ∠d = 125°, ∠e = 55°, ∠f = 55°, ∠g = 125°

Step-by-step explanation:

straight lines form 180°:

125° + ∠a = 180°

=> ∠a = 55°

verticle angles are congruent:

∠c = 125°

∠b ≅ ∠a => ∠b = 55°

When two line are parallel:

same side interior angles are congruent:

∠g ≅ ∠c => ∠g = 125°

∠e ≅ ∠a => ∠e = 55°

∠d = 125°

∠ f ≅ ∠b => ∠f = 55°

The order in which conditions are combined does not matter in a _____.

permutation
combination
sequence
series

Answers

It answer is a combination

Answer:

combination!!

What is the solution of 3x + y = 9 and 3x - 5y = 15?​

Answers

Answer:

(10/3, -1)  

Step-by-step explanation:

So there are two different ways.  

First you could address for y and fitting it into the number cruncher. one condition for y1 and another for y2. At that point go second follow and press 5 and afterward press enter multiple times to discover the convergence.  

the subsequent path is to tackle by hand. I would recommend address the primary condition for y and attachment the condition tackled for y into the other condition. so y = - 3x + 9 and 3x-5y=15. At that point you could do 3x - 5(- 3x+9) = 15. At long last address for x and plug in x into the two conditions to check whether you get a similar y esteem.  

The appropriate response ought to be (10/3, - 1)

Answer:

x = 3 1/3, x = -1.

Step-by-step explanation:

3x + y = 9

3x - 5y = 15

Subtract second equation from the first to eliminate the 3x :

3x - 3x + y - (-5y) = 9 - 15

6y = -6

y = -1.

Plug y = -1 in first equation:

3x + -1 = 9

3x =  10

x = 10/3 = 3 1/3.

Which expression is equivalent to 2(3g - 4) - (8g + 3)?

Answers

Answer:

Step-by-step explanation:

6g - 8 - 8g - 3

-2g - 11

Answer:

-2g - 11

Step-by-step explanation:

2(3g - 4) - (8g + 3)

Use the distributive property to multiply 2 by 3g - 4.

6g + 2(-4) - (8g + 3)

6g - 8 - (8g + 3)

Find the opposite of 8g + 3.

6g - 8 - 8g - 3

Combine like terms.

-2g - 8 - 3

Subtract 3 from -8 to get -11.

-2g + 11

The expression equivalent to 2(3g - 4) - (8g + 3) is -2g - 11.

Ishaan is 3 times as old as Christopher. He is also 14 years older than Christopher. How old is Christopher?

Answers

Answer:

He is 42 years old.

Step-by-step explanation:

3 x 14 = 42

The 3 is for how many times older Ishaan is.

The 14 is how many years older than Christopher Isahaan is.

If you need to find Isaahan's age, just multiply 2 x 14, which is 28.

Isahaan is 28 years old, and Christopher is 42 years old.

Glad I could help!

-Vibilities

Ill give brainliest if answered correctly!
y x 6 = y for 2/3

Answers

Answer:

4

Step-by-step explanation:

BRAINLIEST TO CORRECT ANSWER! :) NO links as answers, or you will be reported!! (question 20)

Answers

It’s c if it’s not it’s B

The hypotenuse of a right triangle measures 15 cm and one of its legs measures 8 cm.
Find the measure of the other leg. If necessary, round to the nearest tenth.

Answers

Use Pythagorean theorem
a^2 + b^2 = c^2
C = hypothenuse
8^2 + b^2 = 15^2
64 + b^2 = 225
b^2 = 161
b = square root 161 = 12.68

Solution: 12.7 cm

The lengths of three ropes are 4 : 5 : 9. If the length of the shortest rope is 20 cm, find the length of the longest rope

Answers

Answer:

Don’t quite me on it, but 45cm?

Explanation:

Well, if the shortest rope (4) is only 20cm, it’s about 5cm per length (?)

So, if you follow that pattern the longest (9) would be 45cm.
The answer is 45
If 20/4 = 5
Then 9x5 = 45

in the figure above, the area of square ABCE=x^2 and DC=y. What is the area of triangle AED?

Answers

Answer:

The area of triangle AED = (x^2-xy)/2

Step-by-step explanation:

Mathematically, the area of a square is the product of its side lengths

Thus, if the area is x^2; then the side of the square measures x

So each of the side of the square has a measure x units

Now, for the base of the square;

EC = ED + DC

x = ED + y

ED = x - y

Mathematically, the area of a triangle is the product of the base and the height of the triangle divided by 2

The height here is x and the base is (x-y)

We have this as;

Area of triangle AED =

1/2 * x * (x-y)

= (x(x-y))/2

= (x^2-xy)/2

can yall help me smart people

Answers

Answer:

D y>0

Step-by-step explanation:

(0,∞)

Grant is making hot dogs for a picnic. Hot dogs come in packages of 8. Hot dog buns come in packages of 12. What is the least number of packages of hot dogs and packages of hot dog buns, can Grant buy so that he has the same number of servings of each?

Answers

Answer:

6 hot dog packages and 4 hot dog buns packages.

Step-by-step explanation:

12 x 4 = 48

8 x 6 = 48

Answer:

3 hot dogs and 2 buns

Step-by-step explanation:

Multiply hot dogs until you get a multiple of 12 for this the lowest common multiple is 24

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