solve using elimination x+2y=4 -x-y=2

Answers

Answer 1

Answer:

x=-8 y=6

Step-by-step explanation:

Add the two equations together. This cancels the x and gets us y=6

Then substitute y in more the first equation which gets us -8

Answer 2

Answer: y = 6 x = -8

Step-by-step explanation:

X+2Y=4

-X-Y=2

(Combine like terms)

Y= 6

(Plug in 6 for y)

X+2(6)=4

X+12=4

X= -8


Related Questions

Which store has the best deal?


A.
Food Store
B.
Friendly Store
C.
Neighborhood Store
D.
Food Store and Friendly Store

Answers

D because you can comparison shop

Step-by-step explanation:

friendly store because they re nice and you will get a discount

where of the ground region shown Show your work​

Answers

24 percent of the land in the Northern Hemisphere has permafrost underneath it (Figure 1). So, permafrost makes up 23 million square kilometers (9 million square miles). Large expanses of permafrost occur in Siberia, the Tibetan Plateau, Alaska, the Canadian Arctic, and other higher mountain regions.

Mr. Turner invested $8,000 in an account for his daughter's college education. The account pays 5% interest compounded annually. How much money will Mr. Turner have in the account after 4 years

A-$9,724.05
B-$11,554,77
C-$8,550
D-$10,320.67

Answers

It may be C I’m sorry if it’s not

Figure 1 and 2 are similar. Based on what you know about side AC’ what would the length of AB be?

Answers

Answer:

12 because that's the only logical answer.

Use the graph to find the following.

Answers

Answer:

where?

Step-by-step explanation:

Are parallelogram rectangles

Answers

Yes if they have equal sides

The athletic fields at Clark Middle School and Watson Middle school are rectangles.
467.75 ft
?
512.25 ft
432.25 ft
Clark Middle School field
Watson Middle School field
"not drawn to scale
The lengths of the corresponding sides of the two fields are proportional.
To the nearest hundredth, what is the width of the field at Watson Middle School?
A. 352.25 ft
D. 418.62 ft
B. 387.75 ft
O E. 473.37 ft
OC. 394.70 Ft

Answers

Answer:B

Step-by-step explanation:

Answer: the answer is b

please hurry up and answer i’ll mark brainliest

Answers

Answer: B. 130

   

Step-by-step explanation:

The shape in the figure is a square. Use the properties of a square to determine the value of x.
Question 3 options:

A) Can't be determined.

B) x = 2

C) x = 4

D) x = 0

Answers

Answer:

Option d is correct

Step-by-step explanation:

Every side of square is equal

According to the question,

[tex]2x + 4 = 4[/tex]

[tex]2x = 4 - 4[/tex]

[tex]2x = 0[/tex]

[tex]x = 0[/tex]

Hope this helps u... ^_^❤️

James had 45 qt of milk. He drank 13 of the milk.

How much milk did James drink?

Enter your answer, as a fraction in simplest form, in the box.

Answers

Question:

James had 4/5 qt of milk. He drank 1/3 of the milk.  How much milk did James drink?

Enter your answer, as a fraction in simplest form, in the box.

Answer:

[tex]Milk = \frac{4}{15}\ qt[/tex]

Step-by-step explanation:

Given

[tex]Total = \frac{4}{5}\ qt[/tex]

[tex]Drank = \frac{1}{3}[/tex]

Required

Determine how much he drank

To do this, we simply multiply the total by the fraction of  milk, he drank.

i.e.

[tex]Milk = \frac{1}{3} * \frac{4}{5}\ qt[/tex]

[tex]Milk = \frac{1*4}{3*5}\ qt[/tex]

[tex]Milk = \frac{4}{15}\ qt[/tex]

Hence, he drank 4/15 qt

Help please..........

Answers

ANSWER : 5/12 - 1/6 i think

Step by Step explanation:

(easy subtraction) Cassie wrote a story with 945 words. While she was revising her work, she erased 138 words. How many words does her story now have?

Answers

Answer:

the answer to your question is 807

Step-by-step explanation:

have a nice day

4/5 + 1/3 simplified

Answers

Answer:

17/15

Step-by-step explanation:

Find the slope of the line passing through the points(9, -6) and (-4, 5).

Answers

Answer:

11/-13

Step-by-step explanation:

5 - (-6)  = 11

-------------

-4 - 6 = -13

Tony rounded each of the numbers 1, 143 and 1, 149
to the nearest hundred. Which choice correctly compares the rounded numbers?

1, 149 > 1, 150

1, 000 = 1, 000

1, 100 = 1, 100

1, 140 < 1, 150

Answers

Answer:

last one.................

Answer: 1,100=1,100

Given

1,143 and 1,149

Required

Which of the option is correct

We start by approximating both numbers to nearest digit

1,143; when approximated to nearest hundred is 1,100

1,149; when approximated to nearest hundred is also 1,100

Hence;

1,143 ≅ 1,100

1,149 ≅ 1,100

Comparing both results, we have that

From the list of given options, option C is correct;

Question that i need help wit

Answers

Answer:

Your answer should be 12/8 mile or just simplify 12/8

Step-by-step explanation:

Given:

Distance ran before the injury, Di = 7/8 mile

Distance left after the injury, Do = 5/8 mile

Total distance of the race, Dt = distance ran before the injury, Di + distance left after the injury, Do

Dt = Di + Do

= 7/8 + 5/8

= 12/8 mile.

Identify the x and y intercepts for this graph

Answers

Answer:

It should be C

Step-by-step explanation:

I’m positive that it is C

Multiply. Write answer in simplest form.
3/4 x 6/8
Plz help :>

Answers

Answer:

9/16

Step-by-step explanation:

6/8= 3/4

3/4*3/4=9/16

Answer:

9/16

I hope this helps.

Step-by-step explanation:

Audrey made the input-output table below.

Answers

Answer: B) It is a multiplicative, because the output is equal to the input times 2.

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

3+3 = 6

5+3=8

7+3=10

9+3=12

11+3=14

braniliest?

you get ask to divide a question but you don't know how, how do they solve it ?

Answers

Step-by-step explanation:

Step 1: D for Divide. How many times will 5 go into 65? ...

Step 2: M for Multiply. You multiply your answer from step 1 and your divisor: 1 x 5 = 5. ...

Step 3: S for Subtract. Next you subtract. ...

Step 4: B for Bring down. ...

Step 1: D for Divide. ...

Step 2: M for Multiply. ...

Step 3: S for Subtract.

Step-by-step explanation:

Dividing something is trying to find how many times a number can appear in another number

For example

64 divided by 4 is 16

4 is the divisor and 64 is the dividend.

So, 4 can appear 16 times to make 64

If the sum of a number and −10 is multiplied by 2, the result is 20 greater than twice the opposite of
the number. Find the number.

Answers

Answer:

-40 on the number line say x=10 in the formula. Use this to help

Step-by-step explanation:

The table below shows a correct representation that 15 pounds of sugar code 3$

Answers

Answer:

True

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

15/3

A bag has red, pink, blue, and brown tiles. There are 7 of each color in the bag. What fraction of the tiles, in simplest form, are not blue or brown?

Answers

Answer:

pink 7   1/2

Step-by-step explanation:

Answer:

1/2

Step-by-step explanation:

Why would it be be appropriate to express a ratio of 7 to 9 but not a ratio 7 to 14?

Answers

Answer:

A 7:9 ratio is simplified as much as it can.

While a 7:14 ratio can be reduced to 1:2.

Answer:

A ratio of 7:14 reduces to 1/2.

Step-by-step explanation:

A ratio of 7:9 cannot be reduced because both 7 and 9 are prime and only divisible by 1. The ratio 7:14 has a common divisor of 7 so it reduces to 1:2

Product of 5604 and 81

Answers

Answer:

Solving vertically

Step-by-step explanation:

5604*1=5604

5604*8=40000+4800+32=44832

44832*10+5604=453924

The value of the product of 5604 and 81 is 453924 and this can be determined by using the arithmetic operations.

Given :

Number 1 - 5604

Number 2 - 81

The following steps can be used to determine the product of 5604 and 81:

Step 1 - Write the expression.

[tex]=5604\times 81[/tex]

Step 2 - Now, split 81 in 9[tex]\times[/tex]9 in the above expression.

[tex]=5604\times 9 \times 9[/tex]

Step 3 - Now, write 5604 as [tex]1401\times 4[/tex] in the above expression.

[tex]=1401\times 4 \times 9 \times 9[/tex]

Step 4 - Multiply 4 by 9 in the above expression.

[tex]=1401\times 36\times 9[/tex]

Step 5 - Multiply 36 by 4 in the above expression.

[tex]=1401\times 324[/tex]

Step 6 - Multiply 1401 by 324 in the above expression.

= 453924

For more information, refer to the link given below:

https://brainly.com/question/1957976

Will bought a Fitbit to measure how far he walks every day. According to the Fitbit, he moves about 27 inches with each step he takes when he walks. How many feet did Will travel in 96 steps?

Answers

Answer:

216 feet

Step-by-step explanation: Just do 27 x 96 to get 2592 inches and then convert that to feet and you get 216 feet

Answer:

about 221 or exactly 220.1 feet

Step-by-step explanation:

1 foot = 12 inches

27 5/8 inches = 2. 30 feet

2.30 feet * 96 steps = 220.1 feet

I'm pretty sure this is how its supposed to go if you meant 5/8 feet with it!

3. Find the slope
(it says its too short thats why im writing this)

Answers

Answer:

[tex]\displaystyle m=\frac{2}{3}[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Algebra I

Slope Formula: [tex]\displaystyle m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Step-by-step explanation:

Step 1: Define

Find points from graph.

Point (0, 3)

Point (-3, 1)

Step 2: Find slope m

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

Substitute in points [SF]:                     [tex]\displaystyle m=\frac{1-3}{-3-0}[/tex][Fraction] Subtract:                              [tex]\displaystyle m=\frac{-2}{-3}[/tex][Fraction] Simplify:                               [tex]\displaystyle m=\frac{2}{3}[/tex]

DJ Davon is making a playlist for work; he is trying to decide what 12 songs to play and in what order they should be played. If he has his choices narrowed down to 14 blues, 25 country, and 21 disco songs, and he wants to play an equal number of blues, country, and disco songs, how many different playlists are possible

Answers

Answer:

3.63 * 10^19

Step-by-step explanation:

Given that :

Number of choices to select = 12

Category available :

Blues - 14

Country - 25

Disco - 21

To select an equal number of song for each category ; then 4 songs will be selected from each :

Using combination :

(14C4 * 25C4 * 21C4)

Since the order matters for the 12 selected songs ; it thus requires 12 permutation

Thus ;

(14C4 * 25C4 * 21C4) * 12!

nCr = n! / (n-r)!r!

Using calculator;

14C4 = 1001 ;

25C4 = 12650

21C4 = 5985

12! = 479001600

Hence,

(1001 * 12650 * 5985) * 479001600

= 36301596217286400000

=3.63 * 10^19

3/4 of 4/5 = ?????????????????

Answers

Answer:

3/4 of 4/5 = 3/5

Step-by-step explanation:

I hope it helps

a flag pole that is 8 feet tall casts a shadow that is 6 ft long a nearby tree casts a shadow that is 21 ft long. How tall is the tree?

Answers

Answer:

The tree is 28 feet tall.

Step-by-step explanation:

It is given that:

Height of flag pole = 8 feet

Shadow of flag pole = 6 feet

Ratio of height to shadow = 8 : 6

Shadow of nearby tree = 21 feet

Height of nearby tree = x

Ratio of height to shadow = x : 21

8 : 6 :: x : 21

Product of means = Product of extremes

6x = 8*21

6x = 168

Dividing both sides by 6

[tex]\frac{6x}{6}=\frac{168}{6}\\x=28[/tex]

Therefore,

The tree is 28 feet tall.

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