Solve the system of equation by elimination.

x+2y= -7
-x-2y=8

A. (8,7)
B. No solution
C. (-7,8)
D. (-8,7)

If you can, please explain step by step:)

Answers

Answer 1

Answer: D

Step-by-step explanation:

Answer 2
D. (-8,7) just do it

Related Questions

5 What is the value of m? Show your work 3 5 (2m - 5) = 2(3m - 4)​

Answers

Answer:

70m-175=6m-12

70m-6m=175-12

64m=163

m=163/64

State whether the lines are parallel, perpendicular,or neither.

1) y = 6х - 3 2) y = 3x + 2 3) 8x - 2y = 3
y = - 1/6x + 7 2y = 6x - 6 x + 4y = - 1

4) 3x + 2y = 5 5) y - 5 = 6x 6) y = 3x + 9
3y + 2x = -3 y - 6x = -1 y = 1/3x - 4​

Answers

Answer:

Please check the explanation.

Step-by-step explanation:

Two lines are parallel if their slopes are equal.Two lines are perpendicular if the product of their slope is -1

We also know that the slope-intercept form of the line equation is

[tex]y=mx+b[/tex]

where m is the slope and b is the y-intercept

Given the lines

1)

y = 6х - 3

Comparing with y=mx+b, the slope of y = 6х - 3:

m₁=6  

y = - 1/6x + 7

Comparing with y=mx+b, the slope of y = - 1/6x + 7:

m₂=-1/6

As

m₁ × m₂ = -1

6 ×  - 1/6 = -1

-1 = -1

Thus, the lines y = 6х - 3 and y = - 1/6x + 7 are perpendicular.

2)

y = 3x + 2

Comparing with y=mx+b, the slope of y = 3x + 2:

m₁=3  

2y = 6x - 6

simplifying to write in slope-intercept form

y=3x-3

Comparing with y=mx+b, the slope of y=3x-3:

m₂=3

As the slopes of y = 3x + 2 and 2y = 6x - 6 are equal.

i.e. m₁ = m₂ → 3 = 3

Thus, the lines y = 3x + 2 and 2y = 6x - 6 are paralle.

3)

8x - 2y = 3

simplifying to write in slope-intercept form

y = 4x - 3/2

Comparing with y=mx+b, the slope of y = 4x - 3/2:

m₁=4  

x + 4y = - 1

simplifying to write in slope-intercept form

y=-1/4x-1/4

Comparing with y=mx+b, the slope of y=-1/4x-1/4:

m₂=-1/4

As

m₁ × m₂ = -1

4 ×  - 1/4 = -1

-1 = -1

Thus, the lines 8x - 2y = 3 and x + 4y = - 1 are perpendicular.

4)

3x+2y = 5

simplifying to write in slope-intercept form

y = -3/2x + 5/2

Comparing with y=mx+b, the slope of y = -3/2x + 5/2:

m₁=-3/2  

3y + 2x = - 3

simplifying to write in slope-intercept form

y = -2/3x - 1

Comparing with y=mx+b, the slope of y = -2/3x - 1:

m₂=-2/3

As m₁ and m₂ are neither equal nor their product is -1, hence the lines neither perpendicular nor parallel.

5)

y - 5 = 6x

simplifying to write in slope-intercept form

y=6x+5

Comparing with y=mx+b, the slope of y=6x+5:

m₁=6  

y - 6x = - 1

simplifying to write in slope-intercept form

y=6x-1

Comparing with y=mx+b, the slope of y=6x-1:

m₂=6

As the slopes of y - 5 = 6x and y - 6x = -1 are equal.

i.e. m₁ = m₂ → 6 = 6

Thus, the lines y - 5 = 6x and y - 6x = -1 are paralle.

6)

y = 3х + 9

Comparing with y=mx+b, the slope of y = 3х + 9:

m₁=3  

y = -1/3x - 4

Comparing with y=mx+b, the slope of y =  1/3x - 4:

m₂=1/3

As m₁ and m₂ are neither equal nor their product is -1, hence the lines neither perpendicular nor parallel.

Perry performs a study to determine the average number of flowers on gardenia bushes at a plant nursery. Which will produce the most representative results?
a sample of the first 20 gardenia bushes near the entrance
a sample of every other gardenia bush in the shade
a sample of every other gardenia bush in full sun
a sample of 10 gardenia bushes in the shade and 10 in full sun

Answers

Answer:

d

Step-by-step explanation:

this is the correct answer on edge people.

A sample of 10 gardenia bushes in the shade and 10 in full sun will help us determine the most representative result.

What is scientific testing ?

"Scientific testing involves figuring out what we would expect to observe if an idea were correct and comparing that expectation to what we actually observe.

Any aspect of the natural world could be explained in many different ways. It is the job of science to collect all those plausible explanations and to use scientific testing to filter through them, retaining ideas that are supported by the evidence and discarding the others."

Hence,

from the definition it is clear that a sample of 10 gardenia bushes in the shade and 10 in full sun.

To know more about scientific testing here

https://brainly.com/question/1598630

#SPJ3

Salvador bought 6 lbs of coffee for $18.66. What is the unit price per pound?

Answers

Answer:

$3.11

Step-by-step explanation:

It is given that,

Salvador bought 6 lbs of coffee for $18.66.

We need to find the unit price per pound.

The unit price per pound is calculated by dividing total cost by 6 as follows :

[tex]C=\dfrac{18.66}{6}\\\\=\$3.11[/tex]

Hence, the unit price per pound is $3.11

uppose a computer animator has worked on 56 projects. If the ratio of video games to all other projects is 5:9, how many projects are video games?

Answers

Answer:

Number of video game = 20

Step-by-step explanation:

Given:

Total number of project = 56

Ratio = 5:9

Find:

Number of video game

Computation:

Number of video game = 56[5/(5+9)]

Number of video game = 56[5/(14)]

Number of video game = 280 / 14

Number of video game = 20

Complete the product of: 0.25 x 2 =
A. 0.75
B. 0.50
C. 1.50
D. 0.20
С C

Answers

Answer:

B is the answer for the question

The answer is B. 0.50

A pecan ple recipe calls for 3 1/2 cups of sugar for 16 servings. How many cups of sugar are needed for 32 servings of pecan ple?
A. 6.24 cups
B. 7 cups
C. about 146 cups
D. about 164 cups

Answers

Answer:

B. 7 cups

Step-by-step explanation:

16+16=32

3 1/2+3 1/2=

3+3=6 1/2+1/2=1

6+1=7

Answer:

B. 7 cups

Step-by-step explanation:

31/2 cups for 16 servings.

32 servings are two 16 servings

Convert 3 1/2 to fraction 7/2 then multiply by 2

7 cups

Write the number that is two hundred thousand greater than: 2,136,280

Answers

Answer:

400 points for you

Step-by-step explanation:

pls help will give brainlist

Answers

Answer:

you make 15 birdhouses, your friend makes 30.

Step-by-step explanation:

NEED HELP RIGHT NOW!!!

Answers

The answer would be D :)

Need help due in less than a hour!

Answers

i don't know how to explain it I can just tell you that 7 is (1,5) 8 is (1,40) 9 is (-16,-7) and 10 is (8,5)

Learning
Diagnostic
Analytics
Recommendations
Skill plans
Math
FL Standards
You have prizes to reveal! Go to your
Eighth grade
Y.8 Write a linear equation from a slope and y-intercept WHP
Learn with an example
A line has a y-intercept of -5 and a slope of 5. What is its equation in slope-intercept form?
Write your answer using integers, proper fractions, and improper fractions in simplest form.
y =
Submit

Answers

What does that mean
Sorry don’t know

30 pointsssss help meeeee

Answers

0.416666666666666 and the 6 continue

add then simplify if possible 1/2 + 2/5

Answers

Answer:

9/10 and it can't be simplified

Step-by-step explanation:

BRAINLIEST PLEASE  

Answer:

9/10

Step-by-step explanation:

1/2 = 5/10

2/5 = 4/10

5/10+4/10= 9/10

If a circle has a diameter of two what would the area be

Answers

Answer:

3.14

Step-by-step explanation:

d=2

A= pi*r^2 = pi*(d/2)^2 = pi*(2/2)^2= pi*1 =pi =3.14

adding fractions with unlike denominators

Answers

Answer:

-5/6

Step-by-step explanation:

Multiplying numerators and denominators to get the LCD in all fraction denominators

=−7×38×3−1×83×8+3×38×3

Then rewriting the equation with the equivalent fractions

=−2124−824+924

With like denominators we can operate on just the numerators

=−21−8+924

=−2024

Simplifying the answer

=−56

-5/6
Hope it helps :D (Have a great day too)

4j + 4 =
Next, subtract 4 from both sides.
4j

Answers

Answer:

4j=-4

j=-1

Step-by-step explanation:

Answer:

4j=-4  j=-1

Step-by-step explanation:

47 Which table contains only values that satisfy the equation y = 0.5x + 14?
Х
y
х
y
0
0
014
5
35
A
5 16.5
С
10
70
10 19
15
105
15 21.5
20
140
20 24
Х
y
Х
y
0
14
0
5
39
B
5
14.5
D
10
64
10
15
15
89
15
15.5

Answers

Answer:

C

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

I would appreciate if someone answered this it’s due in 15 mins and I’m scared cause it’s a big part of my grade I will give a brainlist to whoever answers it correctly

Answers

Answer:

MP=18

Perimeter of ∆LMP=42

Answer:

MP= 18

Perimeter is 42

Step-by-step explanation:

The midsegment is always half of the third side

LP=LO/2

LP=15

18+15+9=42

You can work a total of no more than 10 hours each week at your two jobs. Housecleaning pays $7.50 per hour that you clean and your retail job pays $10.00 an hour. You need to earn at least $56 each week to pay your bills. Write a system of inequalities that shows the various numbers of hours that you can work at each job and still pay your bills.

Answers

Answer:

[tex]c + r \leq 10[/tex]

[tex]7.5c + 10r \geq 56[/tex]

Step-by-step explanation:

Given

Hours = not more than 10

Earnings = At least 56

Required

Represent this as a system of inequalities

Let c represents the cleaning job

Let r represents the retail job

The number of hours

Not more than means [tex]\leq 10[/tex]

So:

[tex]c + r \leq 10[/tex]

Earnings

c = 7.50 per hour

r = 10 per hour

Earnings = At least 56

At least 56 means [tex]\geq 56[/tex]

So;

[tex]7.5c + 10r \geq 56[/tex]

Hence, the system is:

[tex]c + r \leq 10[/tex]

[tex]7.5c + 10r \geq 56[/tex]

HELP OR NO PRESENTS FOR YOU

Answers

Answer:

g= (9,8)  f= (-5,1)

Step-by-step explanation:

you're welcome =)

In ΔKLM, l = 48 inches, ∠K=55° and ∠L=46°. Find the length of k, to the nearest inch.\

Answers

Given:

In  ΔKLM, l = 48 inches, ∠K=55° and ∠L=46°.

To find:

The length of k, to the nearest inch.

Solution:

According to Law of sine,

[tex]\dfrac{a}{\sin A}=\dfrac{b}{\sin B}=\dfrac{c}{\sin C}[/tex]

In ΔKLM, using law of sine, we get

[tex]\dfrac{k}{\sin K}=\dfrac{l}{\sin L}[/tex]

[tex]\dfrac{k}{\sin (55^\circ)}=\dfrac{48}{\sin (46^\circ)}[/tex]

[tex]k=\dfrac{48\times \sin (55^\circ)}{\sin (46^\circ)}[/tex]

On further simplification, we get

[tex]k=\dfrac{48\times 0.819152}{0.7193398}[/tex]

[tex]k=\dfrac{39.319296}{0.7193398}[/tex]

[tex]k=54.66025 [/tex]

Approximate the value to the nearest inch.

[tex]k\approx 55 [/tex]

Therefore, the length of k is 55 inch.

The length of k, to the nearest inch is  ∠K=55°.

Calculation of the length of K:

Since

In ΔKLM, l = 48 inches, ∠K=55° and ∠L=46°.

Now here we apply law of sine

[tex]a\div sin\A = b\div sin\ B = c\div sin\c \\\\k\div sin \ k = l\div sin\ L\\\\k\div sin\ 55 = 48\div sin\ 66[/tex]

k = 54.66

k = 55 degrees

hence, The length of k, to the nearest inch is  ∠K=55°.

Learn more about length here: https://brainly.com/question/2527688

Help usatestprep need answer

Answers

Answer:

one solution

Step-by-step explanation:

they only meet up once

get a new computer br.uh

Mrs. Anders gave her class 15 minutes to read. Courtney read 8 ½ pages in that time. At what rate, in pages per hour, would Courtney read?

Answers

Answer:

34

Step-by-step explanation:

15 mins is 1/4 od an hour so mulitply 8 1/2 (8.5) x 4

Answer:

First we figure out how many words in total she has to read.

This would be the (number of pages) times (number of words per page).

820 * 350 = 287000

so she has to read 287000 words

we divide this by 110 to get how long it would take for her to finish (in minutes)

287000 / 110 = 2609.09090909....

then since there are 60 minutes in an hour, we divide that number by 60

2609.09090909... / 60 = 43.48484848...

Therefore it would take her about 43.5 hours to complete her assignment.

Step-by-step explanation:

Pls hurry don’t make long paragraphs

Answers

Answer:

i think its c

but im not sure

Step-by-step explanation:

help neededddd:))))))....

Answers

Answer:

Your answer is 3.

Step-by-step explanation:

I hope this helped.

Which statement(s) about the line below are true? Select all that apply.

Answers

(0,4) the y intercept is 4
The slope is traveling upwards
Given that:
Answer: B and C
i took the test and it was b and c

help lol i need good help-

Answers

Answer:

with what

Step-by-step explanation:

Over 10 days it snowed 80 inches, how much did it snow in 1 day?

Answers

Answer:

8

Step-by-step explanation:

Answer:

0.125

Step-by-step explanation:

how can place value help me multiply a two digit number by a multiple of 10

Answers

Answer:

Oooooo

Step-by-step explanation:

Other Questions
Write an essay about the Typhoon Ulysses I am so stressed can someone please help me Its 53 points True or False? Many marine organisms depend on estuaries during at least some point of their life. Which organisms release carbon dioxide as waste? Which structure carries instructions for producing the proteins that help make a persons hair curly? Alex has 48 stickers this is 6 times the number of stickers max has how many stickers does max have m2A = 2xMLB = (3x - 10m2C = (110 - x)help me plzzz please help meeeefrom edge about graphing an absolute value functiondetermine the domain and range of the function f(x)= -|x| + 2.the domain of the function is__________the range of the function is__________the options are: all real numbers, all numbers greater than or equal to 2, and all numbers less than or equal to 2 10 points ! Im really trying to pass this but I just dont get it. help pls! :(( I need help with my science question Which molecules do cells need to release energy? Here is the choices.Claim 1: Cells need glucose to release energy. Claim 2: Cells need amino acids to release energy. Claim 3: Cells need oxygen to release energy. Claim 4: Cells need glucose AND amino acids to release energy. Claim 5: Cells need glucose AND oxygen to release energy Claim 6: ALL? The crust of the earth sometimes will move along fractures calledfissuresearthquakesfaultsfolds 1. What does the treaty set as the new boundary lines between the U.S. andMexico? Anything is appreciated I will give you Brinley 0 Help please!If you know geometry please help! The case United States v. Fields was a case that went to the US Supreme Court because Abel Fields claimed that he won an award of Purpleheart, but he never served the military and never received any military award. Fields were found guilty in the first trial and he appealed. The court of appeals overturned his conviction and decided he was not guilty. The government appealed the decision and the US Supreme Court heard the case. This chart summarizes the structure of the Declaration of Independence. Complete the missing sections.----------------------------------------------------------------------------------------------------------------------------Introduction and Beliefs--------------------------------------------------------------------------------------------------------------------------- The middle section describes the issues that led the colonists to write the document. It includes how they tried to resolve the problems before deciding to separate.Formal Declaration--------------------------------------------------------------------------------------------------------------------------Conclusion states that the colonies would now rule themselves. On a Test please helpWhen towing a trailer, you should consider all of the following exceptthe minimum speed limit on roadways.your personal protective equipment.the gross weight of the load.the increased stopping distance hello hello . please help me Think of the last time you found yourself feeling impatient. What was causing the delay? How did you react? Were you able to calm yourself down and accept the delay? SERIOUS ANSWERS ONLY PLEASE!Compare and contrast the terms culinary precisions and culinary definitions. How do either of these terms relate to molecular gastronomy? Use specific examples to illustrate your explanations.Is molecular gastronomy an important advancement in the culinary arts that will stick around for the long haul or a trend that will quickly fade? Why? Explain your answer.As you learned in the unit, molecular gastronomy explores the chemical reactions that take place during cooking. What are some examples of these chemical reactions? Briefly explore this concept further with some online research. Then, use both the information from the unit and what you find online to compare and contrast the different chemical reactions and their impact on the foods they are in. Compare and contrast at least two different chemical reactions and explain.Imagine that you are an entrepreneur interested in opening a baking business. What lessons could you take away from the story of Crumbs Bakery? How would these help your potential baking business venture? Explain.Why do you think that the cake pop has not become as popular as the cupcake? Explain your reasoning.