Mathematics High School

Solve the system by substitution.
y = 5x
y = 9x + 8

Answers

Answer 1

Answer:

(-2,-10)

Step-by-step explanation:

So if y=5x and if y=9x+8 then those should be able to equal each other (substitution):

5x=9x+8

Subtract 5x from both sides:

0=4x+8

Subtract 8 from both sides:

-8=4x

Divide both sides by 4:

x=-2

If x=-2, then we can just plug it back into the first equation:

y=5(-2)

Simplify:

y=-10

Answer 2

Answer:

x = -2

y = -10

Step-by-step explanation:

So if y = 5x

Then you can put that in place of the y

5x = 9x + 8

Get the x's all on one side by subtracting

-4x = 8

Divide both sides by -4

x = -2

Then insert x into the first equation, so

y = 5(-2)

y = -10

Related Questions

A local business in Central Florida is looking for a new employee to manage the company’s website. The company is looking to hire someone who can type at least 55 words per minute. Maria can type at a constant rate of 696 words in 12 minutes. Does Maria type at a fast enough rate to qualify for the job? PLSS HELP

Answers

Answer:

The answer is 58

Step-by-step explanation:

The number 696 with 12 minutes you can divide 696 with 12 then you get that value which is 58.

What’s the answer please?

Answers

Answer:

19.375

Step-by-step explanation:

Answer:

19.375

Step-by-step explanation:

[-15(-1.5)] + [(-2.5) x 1.25]

= [22.5] + [-3.125]

= 19.375

The price of a watch was increased by 20% to £162.
What was the price before the increase?​

Answers

The original price is 135
Step-by-step explanation:
Write equation. Let o be original price, r be rate of increase, P be the increased price. o+ro=P
Substitute values. Original price (o) is unknown, so that will stay as it is; we know that the increased price (P) is 162; we know that the rate of increase (r) is 20%, which in decimal form is 0.20 o+0.20o=162
Add like terms. o is the same as 1o. So 1+0.20 is 1.20. 1.20o=162
Isolate the variable (o). To isolate o, you need to divide both sides by 1.20. 1.20 divided by 1.20 is the same as 1. 162 divided by 1.20 is 135. o=135
Check your work. Plug in the values into the equation and check if it is correct: o+ro=P becomes (135)+(.20)(135)=162. That is simplified into 135+27=162, which is further simplified into 162=162
It’s correct, the answer is 135

Answer:

£129.60

Step-by-step explanation:

10% =  £16.2

20% = £32.4

£162 - £32.40 = £129.60

factorise fully 6x+15x²

Answers

Answer: the fully factorized answer is 3x(2 + 5x)

Answer:

6x time 15x times 15x you will get your answer

Step-by-step explanation:

easy A F.

What is the value of x?
24
36
12
Select one:
O a. 8
O b. 12
O c. 6
O d.

Answers

Answer:

x = 12

Step-by-step explanation:

Write an explicit formula for an, the nth term of the sequence 15, 12,9,....

Answers

Answer:

18-3n

Step-by-step explanation:

18-3(1)=15

18-3(2)=12

etc

etc

Sasha says that she drew an acute isosceles triangle with side lengths of 6 cm,9 cm,and 12 cm and the angles are of 30 degree,50 degrees,and 100 degrees. Danielle says that not possible.Using sides and angles, who is correct. Most helpful gets the Brainliest.

Answers

Answer:

Danielle is correct. An isosceles triangle has two angles that are the same and one that's different.

Step-by-step explanation:

Tell me if it is wrong

I would appreciate a brainliest!

Have a nice day :D

Find the values of x and y.

Answers

Answer:

x=30° y=5

Step-by-step explanation:

All sides of the top triangle are equal. And all angles are equal Since it's an equilateral triangle.

so

8y=40

y=40/8

y=5

Since it's an equilateral triangle. All angles are equal And each angle has dimensions

=180°/3=60°

The angle of the straight line = 180°

so The obtuse angle of the lower isosceles triangle is 180°-60°=120°

The angles at the base of the isosceles triangle are equal

so 2x° = 180°-120°

2x°=60°

x°=60°/2

x°=30°

The difference of two number is 3. Their sum is 13. Write and alive a system of equations to help find the numbers

Answers

The numbers are 8 and 5.
8+5=13
8-5=3

5x^2 + 42x + 16

what would the area be if x = 5

Answers

Answer:

The area would be 301 if x=5.

Step-by-step explanation:

Given expression is:

5x²+42x+16

We have to find the area when x=5

So putting x=5 in the given expression.

Area = 5(5)²+42(5)+16

Taking square of 5 and multiplying 42 by 5

Area = 5(25)+210+16

Area = 75+210+16

Adding all the terms

Area = 301

Hence,

The area would be 301 if x=5.

✨PLEASE HELP✨DUE SOON✨

Answers

Y = 4
X = 5

Solve 6x-2(-2x+14)=22
Then solve y=-2*5+14
(5,4)
y=4 and x=5
sorry if this is wrong

A bathtub is filling with water at a rate of 60 liters per minute.
How many liters of water are in the bathtub after t minutes?
Write your answer as an expression.

Answers

60t sjjdksjsosjdksksksjskznxls

Answer:

YO BIG MAMMA

Step-by-step explanation:

You just yell to your mom and say YO BIG MAMMA and TADA she loves you

Answer the questions please

Answers

Answer:

The first one, As time increases, the number of Perennials sold has decreased

Step-by-step explanation:

Answer:

It's A or the first one on the top.

Step-by-step explanation:

what expression is equivalent to 2m (32m + 1) + 3 (53 - 2)

Answers

Answer:

64m2+2m+255

Step-by-step explanation:

Can smbdy help me???

Answers

9514 1404 393

Answer:

  a.  One solution

Step-by-step explanation:

These are two linear equations with different x-coefficients. They have one solution.

__

Additional comment

If the x-coefficients are the same, the system may have 0 or infinite solutions, depending on the constants. It is not possible for a system of linear equations to have exactly two solutions.

Rewrite the function y = 2(x – 4)^2 – 5 in standard form.

Answers

Answer:

y=2x2−16x+27

Step-by-step explanation:

y = 2x2 + 12x + 13


eeeeeeee

what is 234 times 7658

Answers

Answer:

1,791,972

Step-by-step explanation:

234x7658=1,791,972

hope this helps

What is the value of the expression below? 5+2(10 + 5)​

Answers

U would do 10+5 first then u would do 5+2 so 15+7 =22
The answer is 22. PEMDAS = Parentheses first, so you add 10 + 5 = 15. Then you add 5+2 = 7, = 22.
Or if you’re multiplying it would be 15 x 7

During each week of piano lessons, Nate learns to play 1 new piece. Is the total number of piano pieces Nate learns proportional to the number of weeks he takes lessons?

Answers

Answer:

Yes

Step-by-step explanation:

1 piece per week can be written as a 1:1 ratio

helpppp asap , help a girl outtttt :’(

Answers

Answer:

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

Step-by-step explanation:

math and stuff

sorry if I am wrong, I haven't done this ina while and never studyed it much

Is it A or D? im kind of confused

Answers

the answer is D bc when you do the equation it is w^3 z^7

please ill give brainliest if correct

What is an equation of the line that passes through the point (-1,4) and is parallel to the line x+y=4x?

Answers

Answer:

Y= 14x+5

Step-by-step explanation:

What is the circumference of a circle with a diameter of 3 feet? Use 3.14 for
TT

Pls help

Answers

918155555332feet +3.14

Answer:

9.42

Step-by-step explanation:

100 points! I will mark brainliest! Only answer if you know it please. Random answer will be reported because I’m looking for the REAL answer:)

Answers

Answer:

2 and -1/2

Step-by-step explanation:

perpendicular lines have slopes that have opposite signs and are reciprocals

Pretty sure that is right (2 & -1/2)

Complete the pairs of corresponding parts if △RST ≅ △TXY.



ST =
TY
XY
TX

Answers

Answer:

As

ST is corresponding to XY

Hence, we conclude that:

ST = XY

Step-by-step explanation:

Given

△RST ≅ △TXY

To determine:

ST = ?

As

△RST ≅ △TXY

So the triangles △RST and △TXY are congruent to each other.

We know that congruent triangles have equal corresponding parts.

Please check the attached graph.

From the graph, it is clear that:

RT is corresponding to TY.ST is corresponding to XY.RS is corresponding to TX.

We need to determine ST

as

ST is corresponding to XY

i.e. ST = XY

Hence, we conclude that:

ST = XY

Please help

Write the equation of a line that is parallel to y=-x + 7 and passes
through the point (-4, 1). Write your answer in slope-intercept form,
y = mx + 6.

Answers

Answer:

y = -x -3

Step-by-step explanation:

I went to Desmos and kept guessing y intercepts until the line passed through the point (-4, 1). Sorry I can't explain the real way to figure this out.

What equation in slope intercept form represents the line that passes through the two points?

(2, 5), (7, –1)

Answers

Answer:

y = -3/2 + 8 and/or 3x + 2y = 16

Step-by-step explanation:

(x,y) is helpful to remember

*I believe I'm correct, but I would recommend a quick double-check

A box of chocolates contains five milk chocolates, five dark chocolates, and five white chocolates. You randomly select and eat three chocolates. The first piece is milk chocolate, the second is dark chocolate, and the third is white chocolate. Is it independent or dependen?

Answers

The first piece is milk chocolate, the second is dark chocolate, and the third is white chocolate independent and the probability is 25/546.

What is probability ?

Probability of something is the occurrence of a certain event out of the total events that can occur.

According to the given question

The total no. of chocolates in the box is

(5 + 5+ 5) = 15 chocolates.

The probability of eating a milk chocolate first a dark chocolate second and a white chocolate third is an independent event because occurrence of next event do not depend upon the previous event.

There are 5 milk chocolates.

So, probability of getting a milk chocolate first is

P(mc) = 5/15

= 1/3

Now the the chocolate can no be replaced because it is eaten

∴ Probability of getting a dark chocolate second is

P(dc) = 5/14                          (as the total no. of chocolate is reduced by 1

                                                                    because it has been eaten)  

And the probability of getting a white chocolate in 3rd attempt is

P(wc) = 5/13

As the first piece is milk chocolate, the second is dark chocolate, and the third is white chocolate is an independent event their probability is

P(mc) ∩ P(dc) ∩ P(wc)

= P(mc) × P(dc) × P(wc)

= (1/3 × 5/14 × 5/13)

= 25/546.

Learn more about Probability here :

https://brainly.com/question/11234923

#SPJ1

                                                                                                                                                             

Find WX
10x + 5

7x + 8

8x-1

Answers

Answer: 127

Step-by-step explanation:

Need help cant find the right answer for this one

Answers

Step-by-step explanation:

the answer is a

hope it help....

Other Questions
PLEASE ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! I PROMISE ILL MARK BRAINLEIST PLEASE I AM BEGGING YOU!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Stephanie swims 4/5 of a mile in 5/6 of an hour.Enter the number of miles Stephanie swims in 1 hour. Which of these is what DNA and RNA are? *O A. lipidsO B. proteinsO C. nucleic acidsO D. carbohydrates Which statement best describes the use of catalytic converters in automobiles?They decrease the rate of the reactions that produce harmful gases.They oxidize hydrocarbons to form less toxic gases.They combine the larger hydrocarbon molecules with smaller ones.They increase reaction temperature for cleaner burning. S'il vous plat aidez-moi avec cette rponse quelle est Le rle des dents dans la digestion Which of these statements are correct (TRUE) about the Election of 1800A.Thomas Jefferson Tied with Aaron Burr for First PlaceB.Each party nominated two candidates, the winner would win President and the2nd place would be VPC.Both A and B are CorrectD.Thomas Jefferson Tied with John Adams for first place Which inequality is true when the value of s is 1 A gardening center is planting trees for sale. Until the trees are fully grown, employees need to put ropearound the square section where the trees are planted so that customers do not disturb them. The area of thesoction is 132.25 ft? How much rope will the gardening center need to purchase to surround the section wherethe trees are being planted? Why was Fort Sumters location important?A).It was near the capital of the Union.B).It blocked shipping lanes in the North.C).It served as the base of the Confederacy.D).It protected commercial areas in the South. Ill mark brainliest 106.6 rounded to the nearest hundredth A. 2B. 3C. 4D. 6i need help plzz Imperialism is a system of exploitation that occurs not only in the brutal form of those who come with guns to conquer territory. Imperialism often occurs in more subtle forms, a loan, food aid, blackmail . We are fighting this system that allows a handful of men on Earth to rule all of humanity. What does this quote mean The difference of two numbers is 3, and the sum of three times the larger one and twice the smaller one is 19. Find the two numbers. What is different about parasitism compared to the other biological relationships such as mutualism, predation, competition, and commensalism? from "Piano Obsession" by Ibtisam Barakat Reem is a Palestinian girl who attends a school for refugees, operated by the United Nations. She befriends a girl named Rania, who introduces her to the piano. Read the passage carefully. Then, answer the essay prompt. 1 Rania led me to an elephant-sized piano that squatted serenely in a corner of the church. Before I touched the piano, the sight of it touched me. It reminded me of the first and only time I had visited a zoo. I twirled with delight. 2 A notebook filled with lines and bead-sized dots had been left open. These are notes. One can read them like numbers in a math book. They translate to phrases, passages, long songs, she explained. 3 Songs? Now the beads became birds on the page, long rows on electric wires, singing. Was it possible that these beads could really sing like birds? What must I do to make them do it? 4 Open the lid, she said. A large number of black and white teeth smiled at me. I became more excited, happy, afraid, all at once. The lid was more of a lip. And I instantly knew why the piano might sing, why the notes could be more than a row of birds. The piano could be a person who loves numbers. 5 Ranias father came over to watch us. He noticed the stunned look on my face. You dont have to read the beads. Just sit down; play the keys. I remained reluctant. There are no rules for playing, he explained. You dont have to make songs. Just make music. He shut the bead book. 6 There are no teachers here. This is not a school, he encouraged. I am a church guard. I did not finish my schooling because I didnt like homework or teachers. Just play like a child would. 7 I raised a finger as though it were a foot about to enter a new world. I dipped my finger onto a white bar. I dipped other fingers. All dropped inside a sweet, liquid sound. The white and black might have been sugar wafers, or chocolate bars for a persons ears. I licked my fingers. 8 Rania and her father applauded. A thrill of importanc plz right it as an essay but not that long HURRY PLZ Sally has a budget for school stationery of $37, but has already spent $22.72 on books and folders. Let p represent the amount that Sally can spend on other stationery. Write an inequality that shows how much she can spend on other stationery, and solve for p. The kidneys are _______________ to the liver.a. Dorsalb. Ventralc. Mediald. Superiorhelpppp I'm lost...... can someone help me?The next question refers to the following passage. The sentences have been numbered to help you identify them more easily.(1) As she was driving to visit her twin, Jayla had a strange feeling that something bad was going to happen.(2) Meanwhile, Kayla had the same exact premonition.(3) Worried about her sister, Kayla called Jayla's cell phone.(4) Because she took her eyes off the road to answer the phone call, Jayla lost control of her car and crashed through the front of Kayla's house.Which sentence features an introductory phrase that explains why the main action happened? a. Sentence 1b. Sentence 2c. Sentence 3d. Sentence 4 The price of an item has been reduced by 95%. The original price was $33. There is an unconscious realm of the human mind, and although it is unconscious, it exerts great influence over the individual's personality, moods, and decisions. Which of the following subfields of psychology embraces this as a central idea? a. Behaviorism b. Psychoanalysis c. Humanistic Psychology d. Transpersonal Psychology