What is the solution (x,y) to the system of equations given? 2 x + 4 y = − 16 2x+4y=−16 2 y − x = = 16 2y−x==16

Answers

Answer 1

Answer:

(-12,2)

Step-by-step explanation:

2x + 4y = -16

2y - x = 16

Multiply the bottom part by 2.

2x + 4y = -16

4y - 2x = 32

Add the equations and the answers to the equations up, and they will equal each other.

(2x + 4y) + (4y - 2x) = -16 + 32

8y = 16

y = 2

Plug y = 2 to the 2nd equation.

2*2 - x = 16

4 - x = 16

Subtract 4 from both sides.

-x = 12

Multiply both sides by -1.

x = -12


Related Questions

out of fifty students,34 joined the journalism class and 25 joined robotics club.if 16 students joined both clubs,how many students are in neither club?how many are in either club? show the venn diagram​

Answers

Answer:

Step-by-step explanation:

Total student=50

35 -> j.

25 -> r.

16-> j.+r.

35-16=19 students joined j.

25-16=9 joined r.

50-19+9

50-28=22

Awnser is 22

It will be nice if you give me brainliest. Good luck!

Soft drinks are often sold in six-packs of 12-ounce cans and in 2-liter bottles. A liter is about 33.8 fluid ounces.

Which is the greater volume: a six-pack or 2 liters?

A store offers a 2-liter bottle of soft drink for $1.31 and a six-pack of 12-ounce cans for $1.37. Which is the better value (based on price per ounce)?

Answers

Answer:

List some of the given data:

1 L = 33.8 oz.

A) Which one has more volume?

In a six-pack, each can has 12 oz.

Then in total, this is:

6*12oz = 72oz.

In one liter we have 33.8 oz.

Then in two liters, we have two times that:

2L = 2*33.8 oz = 67.7 oz.

Then the sixpack has more volume.

B) Which one has more value?

Here we must divide the volume by the price:

Six-pack:

Volume  = 72 oz.

Price = $1.37

Ratio = 72oz/$1.37 = 52.55 oz/$.

2L bottle:

Volume = 67.7 oz

Price = $1.31

Ratio = 67.7oz/$1.31 = 51.68 oz/$.

You can see that the ratio is larger in the case of the six-pack, this means that you get more ounces for each dollar.

What is 8/23/25 as decimal

Answers

9514 1404 393

Answer:

  0.01_3913043478260869565217...

Step-by-step explanation:

The value of 8/23/25 is a repeating decimal with a repeat of 22 digits.

  [tex]\dfrac{8}{23}\div25=0.01\overline{3913043478260869565217}[/tex]

3. Evaluate the expression 18
7+2 - 4
a. 2
b. 1.4
c. 6
d. 18

Answers

The correct answer is A

number 2 please thank you!!

Answers

Answer:

the inverse of a function takes the output of the actual function as the input and gives the input of the initial function as the output

here, we are given that when we input 23 in the inverse function of 'f', we get 3

this means that if we input 3 in the initial function, we will get 23 as the output

f(x) = x² - ax + 8

changing the input value to 3

f(3) = (3)² - 3a + 8

changing the output value to 23

23 = 9 - 3a + 8

3a = 17 - 23

3a = -6

a = -2

40% of 250 is equal to 60% of what number

Answers

Answer:

24

Step-by-step explanation:

250% × ? = 60

? =

60 ÷ 250% =

60 ÷ (250 ÷ 100) =

(100 × 60) ÷ 250 =

6,000 ÷ 250 =

24

1) Paula buys 5 sandwiches. Each sandwich is the same price. She has a coupon for $2 off the entire purchase. She pays a total of $50.


• Which equation can be used to find the price, x, of one sandwich?

5(x + 2) = 50
5x + 2 = 50
5(x − 2) = 50
5x – 2 = 50

Answers

Answer:

5x - 2 = 50

Step-by-step explanation:

The coupon takes $2 OFF the entire purchase, so we eliminate answers A and B. If we take away $2 off the price of each sandwich, then that would be a $10 coupon, so we eliminate C. The only answer left is D, so D is the answer.

Answer:

5x - 2 = 50

I READY!!!

holpe it help

Consider the following data on x = weight (pounds) and y = price ($) for 10 road-racing bikes.

Brand Weight Price ($)
A 17.8 2,100
B 16.1 6,250
C 14.9 8,370
D 15.9 6,200
E 17.2 4,000
F 13.1 8,500
G 16.2 6,000
H 17.1 2,580
I 17.6 3,500
J 14.1 8,000

Required:
Use the F test to determine whether the weight for a bike and the price are related at the 0.05 level.

Answers

Answer:

There is a significant relation between weight and price

Step-by-step explanation:

              Brand Weight(x)          Price ($) (y)

A                  17.8                        2100

B                   16.1                        6,250

C                   14.9                        8,370

D                   15.9                        6,200

E                   17.2                        4,000

F                   13.1                         8,500

G                   16.2                        6,000

H                   17.1                         2,580

I                   17.6                          3,500

J                   14.1                         8,000

Null Hypothesis : [tex]H_0: \mu =0[/tex]

Alternate Hypothesis : [tex]H_a: \mu \neq 0[/tex]

Given : SST=51956800 SSE= 7312286.84 n = 10

SSR = SST-SSE

SSR=51956800-7312286.84

SSR=44644513.16

Level of significance =[tex]\alpha = 0.05[/tex]

[tex]F=\frac{\frac{SSR}{m}}{\frac{SSE}{n-k}}[/tex]

Where m = no. of restrictions

k = No. of independent variables

[tex]F=\frac{\frac{44644513.16}{1}}{\frac{ 7312286.84}{10-2}}[/tex]

F=48.843

Degree of freedom 1 = 1

Degree of freedom 2 = 10-2=8

Using calculator

p-value is .000114.

p value < α

So, we reject the null hypothesis .

Hence There is a significant relation between weight and price

Pls give me a real awnser this is a chart so the question is the pic

Answers

Answer:

The answer is in the attachment!

Step-by-step explanation:

Find the total surface area of this cuboid,
5 cm
4 cm
6 cm

Answers

I don’t see a picture:(

The variables y and x have a proportional relationship, and y = 25 when x = 60.


What is the value of x when y = 30?

A. x = 25
B. x = 36
C. x = 50
D. X= 72

Answers

Answer:

A

Step-by-step explanation:

A. x = 25

it’s A. x = 25. :) i hope this helped !!

What is the domain of the following relation?


a. {-3, -1, 1, 4, 5}
b. {-5, 0, 2, 6}
c. {-3, -5, 0, 2, 4, 5, 6}
d. there is no domain

Answers

The answer is a, because I need more

The difference of a number and 6 is the same as 5 times the sum of the number and 2. What is the number

Answers

Answer: the equation would be x-6 = 5(x+2) and x= 0.666666666666667

Step-by-step explanation:

Answer:

-4

Step-by-step explanation:

Mrs. Simon is teaching a 5th grade class. She is standing 6 meters in front of Britney. Lisa is sitting to Britney's right. If Lisa and Mrs. Simon are 10 meters apart, how far apart are Britney and Lisa?​

Answers

Answer:

they are 4 meters apart from each other i think im not so sure

They’re 4 meters apart. You would subtract 10 from 6 to get 4.

Solve for x 10x+1=8x+25

Answers

Answer:

x=12

Step-by-step explanation:

(10(12)=8(12)+25)=(120+1=96+25)=(121=121)

Collect the like terms
10x-8x
2x=25-1
Subtract the other numbers
25-1=24
Divide both sides by 2
X=12


I need help I currently have a c trying to make up some work

Answers

Answer:

y=(-2)

Step-by-step explanation:

x=(-4) so 3x(-4)=(-12) (note: negative times a positive always equals a negative) 12/6=2 so 6x(-2)=(-12) both equations equal the same answer

A rectangle is dilated using a scale factor of 6. The
image is then dilated using a scale factor of 1/3. What
scale factor could you use to dilate the origianl
rectangle to get the final rectangle? Explain.

Answers

9514 1404 393

Answer:

  2

Step-by-step explanation:

The second rectangle's dimensions are 1/3 of those after they were multiplied by 6, so are (6)(1/3) = 2 times the original dimensions.

A scale factor of 2 could be used to get the final rectangle.

The answer is 2 I’m pretty sure

I NEED HELP PLS HELP MEEE​

Answers

the answer for this problem is t=-6.957

Imagine that two researchers, Bill and Ted, independently carry out clinical trials to test the same null hypothesis: H0: COX-2 selective inhibitors (used to treat arthritis) have no effect on the risk of cardiac arrest. They use the same population for their study, but Bill uses a sample size of 60 randomly selected subjects and Ted uses a sample size of 100 randomly selected subjects. Assuming all other aspects of their studies are the same, answer the following:

Required:
a. Whose study has the higher probability of a Type-II error?
b. Whose study has higher power?
c. Whose study has the higher probability of a Type-I error?
d. Should their alternative hypotheses be one-sided or two-sided? Explain
e. Suppose Bill’s analysis results in p-value = 0.03. What should be his conclusion?

Answers

Answer:

A) The 60-subject study will have the higher probability of a Type-II error.

B) 100-subject study will have higher power.

C) they will have the same probability of a Type-I error

D) Two tailed because either of the two results would be of interest

E) If p-value = 0.03, he should reject the null hypothesis if this p-value is less than the significance level. But if it's more than the significance level, he will fail to reject the null hypothesis.

Step-by-step explanation:

A) A type II error is an error that occurs when we accept the null hypothesis even though it is actually false.

Now, Smaller sample sizes usually would have a lesser chance of rejecting the null hypothesis even though it's false. Thus, the 60-subject study will have the higher probability of a Type-II error.

B) power = 1 - Pr(Type II error)

Since the 60-subject study has a higher probability of type II error it means it will have lesser power. Thus, 100-subject study will have higher power.

C) Type I error is when we incorrectly reject a true null hypothesis.

Pr(Type I error) = significance level

Now, since we are told that other aspects of their study are the same it means their significance levels are the same, it means they will have the same probability of a Type-I error

D) It should be two tailed because either of the two results would be of interest. It's either the drug was associated with more cardiac arrests or less potential treatment option.

E) If p-value = 0.03, he should reject the null hypothesis if this p-value is less than the significance level. But if it's more than the significance level, he will fail to reject the null hypothesis.

You borrow $600 to buy a violin. The simple interest rate is 15%. You
pay off the loan after 5 years. How much do you pay for the loan?
What would the monthly payment be for the loan?

Answers

Answer:

$1050

Step-by-step explanation:

$600*15%*5=$450 interest

interest+borrowed=loan

$450+$600=$1050

I don't know the monthly payment sorry

Anybody Know This. ?

Answers

Answer second option

Step-by-step explanation:

Answer:

the 2nd

Step-by-step explanation:

one is the one and only

joaquin has been working on homework for 3 1/2 hours. if each assignment takes him 1/4 of an hour, how many assignments has he completed?

Answers

Convert 3 1/2 to a improper fraction:

3 1/2 = 7/2

Divide 7/2 by 1/4:

7/2 ÷ 1/4

7/2 × 4/1

28 / 2

= 14

Joaquin has finished 14 assignments

Answer:

14

Step-by-step explanation:

The age of earth’s crust is 5 · 10^9 years. Express this number as an integer.

Answers

Answer:

5,000,000,000 (see below)

Step-by-step explanation:

Integers are whole numbers and their opposites. That doesn't include fractions or decimals, even if they're negative. Being negative doesn't do anything, really.

For example, 5 and –5 are integers, but 5.1 or –5.3 are not integers. They're decimals, which means they're rational.

Integers also include 0.

Whole numbers do not include 0, so they're only 1, 2, 3, 4, 5, 6, 7, 8, 9 . . . and so on.

All whole numbers are integers.

So in order to find 5 × [tex]10^{9}[/tex] as an integer, you'll have to multiply the 5 and [tex]10^{9}[/tex] together.

[tex]10^{9}[/tex] is simply nine zeros, so it's: 1,000,000,000.

5 × 1,000,000,000 = 5,000,000,000

5,000,000,000 is not a decimal or fraction—and it also isn't negative. That means it's a whole number. Which qualifies it as an integer as well.

what is 1325864 in expanded form​

Answers

Answer:

1,000,000 + 300,000 + 20,000  + 5,000 + 800  + 60 + 4  

Step-by-step explanation:

Consider 8 = − 2/3x. 1 Which is the BEST first step to take when solving the given equation?


A) Multiply each side by 3/2.

B) Multiply each side by −3/2.

C) Multiply each side by −2/3.

D) Add 2/3x to each side.


Solve the equation.

A) x = 10

B) x = 6

C) x = −10

D) x = −12

Answers

Solve for x by simplifying both sides of the equation, then isolating the variable. Answer x = −12

Angles of a triangle are in the ratio 2:4:3the smallest angle of the triangle is ​

Answers

Angle A, 2

2 is the smallest out of 2:4:3

hope this helps :)

What is the distance from point Yto wx in the figure below?
w
36 Z 15 X
39
152
y
A. Cannot be determined
B. 153
C. 15.2
D. 15
E. 3
O F. 7.5

Answers

Answer:15

Step-by-step explanation:

ANSWER TO GET BRAINLIEST!!!
Sheila can ride are bicycle 6,000 meters in 15 minutes. Cal can ride his bicycle 3,400 meters in 8 minutes.Select true or false for the following statement. cal can ride his bicycle 750 meters in 1 minutes.

Answers

No he cannot it would be 425 minutes

Can someone please help, ty!!

Answers

I presume it is A although I am not sure...

Answer:

B i think

Step-by-step explanation:

Toby gets 78 votes which is 52 percent how many voted in Tobys grade

Answers

Answer:

52% = 0.52

78/0.52 =150

150 students voted

Answer:

150

Step-by-step explanation:

When you multiply a number by a percentage you have to convert the percentage to a decimal so 52% turns into 0.52. If you multiply the number of votes by 0.52 it should equal to 78. In order to find the total number of votes.  you have to go backwards and divide. So you divide 78 by 0.52 and it should give you 150.

Other Questions
The county fair charges $3.25 per ticket for the rides. Henry bought 8 tickets for the rides and spent a total of $39.50 at the fair. Henry spent his money only on ride tickets and fair admission. The price of the fair admission is the same for everyone. Use x to represent the number of ride tickets and y to represent the total cost. (a)Find the cost of admission to the fair. Explain how you found the cost of admission. (b)Write a linear equation that can be used to determine the cost for anyone who pays for ride tickets and fair admission. (c)Explain what the coefficient on x and the constant of your linear equation represent. True or false - please hurry Theres a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What color are the stairs? The remote interior angles of a triangle measure 45 and 60. What is the measure of the exterior angle? I know the answer, I need to know how to solve Please help me the picture is above Ill mark as the brainliest, please just edit and write on the picture above and send it. Tank you. :) Please help with homework What happened to the greenish warbler birds as they migrated from the southern portion of their range up around the Tibetan Plateau? a. They evolved separately as they moved north and became two separate species. b. The original species died off, but the ones that were able to adapt to a northern climate evolved into a new species. c. As a whole the species was able to adapt to a colder climate, but no significant changes occurred. d. They were unable to adapt and evolve to ensure their survival and became extinct. Please select the best answer from the choices provided A B C D Write a descriptive paragraph on Stephen Hawking based on the clues given below: Well know cosmologist and author - born in Oxford, England very talented studied physics atOxford known for his research on origin of the universe and books. This is for all you billie eilish fans so if your not a billie eilish fan move along When is her birthday ? What is the mean for the data shown in the line plot?8655 and 7 How did early Islam affect the lives of women? The Empire State building is 1250 feet tall maria wants to make a model that has a scale of 1/4 foot equals 50 feet how tall with her model B The perimeter of a rectangle is 42 centimeters. The length of the rectangle can be represented by (x+4) and its width can be represented by (2x - 7). What equation would you use to solve for x? * explain how the lungs work What is the distance between 4.5 and 3.75 Calculate the atomic mass of the unknown element X described below. Please help Help Me Please!!!!!!!!!! The ratio of children to teachers at a preschool is 14:5. How many children are at the preschool if there are 30 teachers? anwser this ASAP please