2x + 2y = 4 -x+ 2y = 4​

Answers

Answer 1

Answer:

x = 0, y = 2

Step-by-step explanation:

We can use substitution method to substitute 2y into 2x + 2y = 4.

-x + 2y = 4

2y = 4 + x --- Equation 1

2x + 2y = 4 --- Equation 2

Substitute Equation 1 into Equation 2:

2x + 2y = 4

2x + 4 + x = 4

3x + 4 = 4

Isolate 3x.

3x = 4-4

    = 0

Find x.

x = 0 ÷ 3

x = 0

Substitute x = 0 into Equation 1:

2y = 4 + x

2y = 4 + 0

    = 4

Find y.

y = 4 ÷ 2

y = 2

Answer 2
The answer is Y=2 I’m pretty sure

Related Questions

Can someone answer this and tell me how to find it?[tex]x^{2} -x+6/x-3[/tex]

Answers

Answer:

go to symbolab

it gives steps and answers. Its also free

Step-by-step explanation:

y + 2 = -3(x - 4). What is the slope?

Answers

Answer:

m=-3

Step-by-step explanation:

Monica has a rectangular piece of fabric with an area of 3/4 square yard and a length of L yards. Write an algebraic expression to help find the width?

Answers

Anwer

W=3/4L

Step by step explanation:

Monica has a rectangular piece of fabric with an area of 3/4 square yard

the  length is L yards

Required

The expression for the Width of the Fabric

Step two:

we know that the Area is expressed as

Area= L*W

3/4= L*W

cross multiply we have

3=4LW

divide both sides by 4L

W= 3/4L

what is an integer to describe 25 degrees fahrenheit below zero brainly

Answers

Answer:

-25

Step-by-step explanation:

25 degrees below zero indicates that we are working with a negative number, so it's -25

~theLocoCoco

Answer:

The answer is -25 for sure

Step-by-step explanation:

An angle measures 78° less than the measure of its complementary angle. What is the
measure of each angle?

Answers

78,12,90 I think we’re the measure of each angles.

evaluate the following given f(x)=3x-7 find x when f(x)=17

Answers

Answer:

When f(x) equals 17, x is equal to 8.

Step-by-step explanation:

[tex]f(x) = 3x - 7\\17 = 3x - 7\\3x = 17 + 7\\3x = 24\\x = 24/3\\x = 8[/tex]

The sum of two numbers is 22 their difference is 4

Answers

Answer:

x=13

Step-by-step explanation:

ok so let x+y=22

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

x and y are the 2 unkown Number

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

x-y=4

their difference is 4

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

add both equations

(x+y=22)

+(x-y=4)

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

y's cancel out

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

2x=26

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

x=13

Sum: 13+9=22
Difference: 13-9=4

x-y=4
x=4+y

x+y=22
4+y+y=22
4+2y=22
2y=18
y=9

x+y=22
x+9=22
x=13

8. If a runner’s power is 400 W as she runs, how much chemical energy does she convert into other forms in 10.0 minutes? E = P X t

Answers

Answer:

2400kJ

Step-by-step explanation:

Step one:

given data

power P= 400W

time = 10minutes

to seconds= 60*10 = 600 seconds

Required

the energy

Step two:

we know that Energy= power * time

E=P*t

E=400*600

E=240000

E=2400kJ

She converts 2400kJ into other forms

if any of you can help me AND get the right answer i will give you brainleist!

Answers

Answer:

7(1+2)

Step-by-step explanation:

So find the Greatest common factor first which is7 in this case

now we divide each number by 7

1+2 now

now we put that around parthesis and multiply it by 7

7(1+2)

Thats how you factpr

Check:

using distributive property

7+14, same answer.

Answer:

7(1+2)

Step-by-step explanation:

Find the factors of each number

7 has factors of 1,7

14 has factors of 1,2,7,14

The greatest common factor is 7

7*1 + 2*7

Factor out the 7

7(1+2)

ill give the crown things
The school book fair has a great deal on the last day of the book fair! The first two books you buy costs a total of $7 and then each book purchased after that costs $3.50. How much do you owe if you purchase 8 books?

Answers

Answer:

28$

Step-by-step explanation:

You subtract 2 from 8 which is 6, you then multiply 6 times 3.50. Then add 7, which you get 28$

Answer:

$28.000000000000000000000000000000000

Step-by-step explanation:

Lol they're called, wait, what are they called again? ;-; no no I really forgot this time.

Onto the Problamo

We purchase 8 books in total. The first two books cost $7. So that 2/8 books purchased. now we need to purchase 6 more. Because It says: $3.50 per book, we do 3.50*6 or 3.50+3.50+3.50+3.50+3.50+3.50. so 7$ from the 2 books from the first statement plus $21 from the leftover 6 books.

7+21=28$

so I owe the school book fair $28 in the end

Which expression is equal to 2xx−2−x+3x+5?

Answers

Answer:

It's the fourth one

Following are the solution to the given expression:

Given:

[tex]\bold{\frac{2x}{x-2}- \frac{x+3}{x+5}}[/tex]

To find:

Expression =?

Solution:

[tex]\to \bold{\frac{2x}{x-2}- \frac{x+3}{x+5}}\\\\\to \bold{\frac{2x(x+5) -(x+3) (x-2)}{(x-2)(x+5)}}\\\\\to \bold{\frac{2x^2+10x -(x^2 -2x+ 3x-6)}{(x-2)(x+5)}}\\\\\to \bold{\frac{2x^2+10x -(x^2 +x-6)}{(x-2)(x+5)}}\\\\\to \bold{\frac{2x^2+10x -x^2 -x+6)}{(x-2)(x+5)}}\\\\\to \bold{\frac{x^2+9x+6}{(x-2)(x+5)}}\\\\[/tex]

Therefore, the answer is "last choice".

Learn more:

brainly.com/question/17079155

A 6-ounce drink costs $2.16. What is the unit rate (cost / 1 oz.)?

Answers

Answer:

im pretty sure its 0.36

Step-by-step explanation:

The unit rate or cost of one ounce of the drink is $0.36.

Given that:

A 6-ounce drink costs $2.16.

It is required to find the unit rate.

Now, the unit rate can be defined as the quantity of something with respect to another quantity.

Here, the unit rate is the cost of the drink per ounce of the drink.

Cost of 6-ounce drink = $2.16

Let the cost of one ounce drink = x

Here, the proportional concept can be used.

6 / 2.16 = 1 / x

Cross multiply.

6x = 2.16

Divide both sides by 6.

x = 0.36

Hence the unit cost is $0.36.

Learn more about Unit Rate here :

https://brainly.com/question/29180656

#SPJ2

How do you Estimate the Product of Decimals and Whole
Numbers
Estimate each product. You can round to the greatest position or
use compatible numbers. Show how you estimated.

Answers

Answer:

1) 8.5

2) 60

3) 69.3

4) 6.8

5) 3.6

6) 10.5

Step-by-step explanation:

Take out the decimal of the estimated factors and multiply. Count how far to left the decimal is in the factors. In the product, put the decimal as many to the left as it was in the factors. (ex. 6.93 x 42, 6.93 rounds to 6.9, 42 rounds to 40, 69 x 40 = 2,760, move the decimal over one for correct place value,            6.9 x 40 = 276.0 or 276)

Put these integers in order from least to greatest.
34, 0, – 17, - 56 , 5

Answers

Answer: -56 -17 0 5 34

Step-by-step explanation:

The more left you go on a number line the smaller it is

Answer:

-56,-17,0,5,34

Step-by-step explanation:

negatives are less than the positives so you start with the greatest negative and then go to the positives. The 0 is the origin.

The data represent the results for a test for a certain disease. Assume one individual from the group is randomly selected. Find the probability of getting someone who tests ​negative, given that he or she has the disease.

Answers

Answer:

[tex]Probability = 0.0470[/tex]

Step-by-step explanation:

This question has missing detail. (See attachment for the data)

Required

Determine the probability that a selected individual who has the disease test negative.

This type of probability is referred to as conditional probability.

First, we need to get the number of individuals who have the disease.

[tex]Disease =142 + 7[/tex]

[tex]Disease =149[/tex]

Next, we list out the number of individual who have the disease but is negative.

[tex]Negative = 7[/tex]

The probability is then calculated as:

[tex]Probability = \frac{Negative}{Disease}[/tex]

[tex]Probability = \frac{7}{149}[/tex]

[tex]Probability = 0.04697986577[/tex]

[tex]Probability = 0.0470[/tex] (approximated)

Solve the following to find the quotient, 6.42 ÷ 3 =

Answers

Answer:

2.14

Step-by-step explanation:

Answer:

2.14

Step-by-step explanation:

hope this helps

Plz mark brainliest :)

A fast food restaurant sells milkshake in a container composed of a cylinder with a radius of 2 inches and a height of 3 inches surmounted by a hemispherical top of a radius 2 inches.

a.) Compute the volume of milkshake that it contains

b.) Compute the surface area of the container

Answers

Answer:

Below in bold.

Step-by-step explanation:

(a) Volume = volume of the cylinder + volume of hemisphere

= pi r^2 h + 1/2 * 4/3 pi r^3

= pi 2^2 3 + 2/3 pi 2^3

= 12pi + 16pi/3

= 52pi/3

= 52pi/3 in^3

= 54.45 in^3 to nearest hundredth.

(b) Surface area  = area of base + area of curved part + area of the hemisphere

= pi 2^2 + 3 * 2pi 2 + 2 pi 2^2

=  4pi + 8 pi + 12pi

= 24pi in^2

= 75.40 to nearest hundredth.

3 6/12 +4 1/2 tell me what it is

Answers

Answer:

8

Step-by-step explanation:

3 + 4 = 7

6/12 + 1/2 = 1

7+1 = 8

A sports equipment store rents road bikes for $23 an hour.
Over the summer, these bikes were rented for a total of
1,080 hours. How much money did the store make renting bikes?

Answers

Answer:

$24,840

Step-by-step explanation:

Please mark brainliest.

Can someone answer my past questions thanks

Answers

Response:

I'll try if I can but

BRAINLIEST? Thanks!

if two points are in a plane, then the line that contains them is

Answers

Answer:

...then the line containing them lies in the plane. If two planes intersect, then their intersection is a line.

Step-by-step explanation:

Help mehhhhhh please!!!!!!!!!!!!

Answers

The answer is A.multiply 3 * 6 and 3.6 * 5 and see if cross products are equivalent

Gabriela has dinner at a cafe and the cost of her meal is \$45.00$45.00dollar sign, 45, point, 00. Because of the service, she wants to leave a 15\%15%15, percent tip.What is her total bill including tip?

Answers

Answer:

$51.75

Step-by-step explanation:

The meal cost $45. $45 is 100% of the cost. She wants to leave a 15% tip, so add 15% to 100%.

15% + 100% = 115%

She will pay 115% of $45.

115% of $45 = 1.15 * $45 = $51.75

Which division problem is represented with this model? 14÷3 15÷3 13÷2 15÷4

Answers

Answer:

The division model is 15 ÷ 3

Step-by-step explanation:

Required

Interpret the division model

A division model is of the form: Dividend ÷ Divisor

In the attached figure (in the question), there are 5 vertical partitions.

This vertical partitions represents the result of the model

Also from the question attachment;

The horizontal partitions on the left, if traced to the right side of the diagram means that each vertical partition is divided into 3 and this represents the divisor of the model.

So, we have:

[tex]Divisor = 3[/tex]

To get the quotient of the model, I'll make use of my attached file.

Counting the number of boxes, we can see that there are 15 boxes in total.

So, we have:

[tex]Dividend = 15[/tex]

Hence, the division model is: 15 ÷ 3

Answer:

1/5 ÷ 3

Step-by-step explanation:

pick the answer If you trust me ._.

can you Evaluate 2. pls anyone

Answers

Answer:

no

Step-by-step explanation:

2 is just 2

in how many ways can 7 of 10 mice can be arranged in a row for geentics experiments?

Answers

Answer:

Number of arrangements is 604800

Step-by-step explanation:

Given

[tex]Mouse = 10[/tex] --- Total

[tex]Mouse = 7[/tex] --- Arrangement

Required

Determine the number of ways

Since, it is an arrangement, then we make use of the following permutation formula to answer this question.

[tex]^nP_r = \frac{n!}{(n-r)!}[/tex]

Where

[tex]n = 10[/tex]

[tex]r = 7[/tex]

So:

[tex]^nP_r = \frac{n!}{(n-r)!}[/tex]

[tex]^{10}P_7 = \frac{10!}{(10-7)!}[/tex]

[tex]^{10}P_7 = \frac{10!}{3!}[/tex]

[tex]^{10}P_7 = \frac{3628800}{6}[/tex]

[tex]^{10}P_7 = 604800[/tex]

Hence, number of arrangements is 604800

The ratio of dogs to cats at an animal center 4to3. There are 16 dogs at the animal shelter. How many cats are their

Answers

Answer:

yo wassup

Step-by-step explanation:

Answer:

12 cats

Step-by-step explanation:

(I really do need help)

Answers

Answer:

90 i think

Step-by-step explanation:

The answer is 90 gl on the test or something lol

The ratio of yellow flowers to the total number of flowers in a bucket 5 to 9.How many flowers are yellow if there are 45 flowers in all?

Answers

Answer:

if there is any pictures so i can answer it

simplify the fraction 2/6

Answers

1/3 :) sjsjsjsndksnsnxnndnfdnsnsnsn

2/6

Reducing is another word simplify

Divide by 2 for the numerator and denominator

2/2= 1

2/6= 3

Answer : 1/3

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