Solve this system using the substitution method: 2a-4b=9; 2b-4a=-3

Answers

Answer 1

Answer:

1 ) 1,4.5 2)1,-5/4

Step-by-step explanation:

we have to solve both by :

let a be (1) in first case

now solve like this 2(1)-4b=9


Related Questions

v= u + at, find v, when u = 12, a = 5 and t = 7

Answers

Answer:

V=47

Step-by-step explanation:

12+5x7

12+35

47

Answer:

Final velocity (v) = 47 m/s

Step-by-step explanation:

u = 12

a = 5

t = 7

v = ?

v = u + at (first law of motion)

v = 12 + (5 × 7)

v = 12 + 35

v = 47 m/s.

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Answers

5 a) 22.6

b) 67.8

6 a) 9 miles

b) 18 miles

7. Alicia

Hope this helps pls mark me brainliest thx that took me ages

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In this lesson, you will learn more about the properties and characteristics of triangles and.

rectangles
cylinders
rhombii
circles

Answers

Answer:

rectangles

Step-by-step explanation:

Answer:

rhombii

Step-by-step explanation:

One number is 24 more than the other. What are the numbers if their sum is 84

Answers

Answer:

The required numbers are 30 and 54.

Step-by-step explanation:

Let 'x' be the smaller numberLet 'y' be the larger number

Given that one number is 24 more than the other, so

[tex]y = x + 24[/tex]

Given that the sum of the numbers is 84, so

[tex]x + y = 84[/tex]

so we have two equations

[tex]\begin{bmatrix}y=x+24\\ x+y=84\end{bmatrix}[/tex]

Arrange equation variables for elimination

[tex]\begin{bmatrix}y-x=24\\ y+x=84\end{bmatrix}[/tex]

subtracting the equartions

[tex]y+x=84[/tex]

[tex]-[/tex]

[tex]\underline{y-x=24}[/tex]

[tex]2x=60[/tex]

now solve 2x = 60 for x

[tex]2x=60[/tex]

Divide both sides by 2

[tex]\frac{2x}{2}=\frac{60}{2}[/tex]

Simplify

[tex]x=30[/tex]

For y - x = 24 plug in x = 30

[tex]y-30=24[/tex]

Add 30 to both sides

[tex]y-30+30=24+30[/tex]

Simplify

[tex]y=54[/tex]

Thus, the required numbers are 30 and 54.

Verification:

Given that one number is 24 more than the other, so

[tex]y = x + 24[/tex]

substitute x = 30

y = 30 + 24

y = 54

Thus, y is 24 more than x.

Given that the sum of the numbers is 84, so

[tex]x + y = 84[/tex]

sustitute x = 30 and y = 54

30 + 54 = 84

84 = 84

L.H.S = R.H.S

Thus,  the sum of the numbers is indeed 84.

According to the National Center for Education Statistics, there were 13.2 million undergraduate students enrolled in degree-granting postsecondary institutions in Fall 2000. In Fall 2014, the enrollment was 17.3 million students. Assuming this relationship grows linearly, write a linear function that models the undergraduate enrollment in postsecondary institutions
x years after 2000

Answers

Answer:

13.2 + 0.292X = Y

Step-by-step explanation:

Given that, according to the National Center for Education Statistics, there were 13.2 million undergraduate students enrolled in degree-granting postsecondary institutions in Fall 2000, while in Fall 2014, the enrollment was 17.3 million students, assuming this relationship grows linearly, a linear function that models the undergraduate enrollment in postsecondary institutions X years after 2000 would be carried out as follows:

2014-2000 = 14

17.3 - 13.2 = 4.1

4.1 / 14 = 0.292

Thus, each year 292,000 new students are enrolled in postsecondary institutions. Therefore, the function that determines what is requested would be the following:

13.2 + 0.292X = Y

Given: ∆ABC ≅ ∆DEF. Find DF and m∠B.

Answers

Answer:

DF is 3 and angle B is 28

Step-by-step explanation:

If both are congruent, the measurements are the same.

Answer:

DF = 3, Angle B = 28

Step-by-step explanation:

Look how the congruence statement is written. Ac goes with Df and angle E goes with angle B, so they are congruent.


[tex](2y{}^{3}) {}^{2} [/tex]
answer:2y6​

Answers

Ce clasă ești sa văd daca te pot ajuta

Pls tell me the rest of the angles. Angle 1 is 112.9 degrees.

Answers

Answer:

the rest of the anglesss

Answer:

All together must be 180 but i dont know how to solve that

A farmer created a corn maze. He charged $5 to run through the maze. Some of the trails led to winning a cash prize of $30. Make a tree diagram to show for your own reference......make sure it has: all the "group possible" paths customers might take, entering the maze on the upper, middle, or lower path and proceeding to an exit with or without a pumpkin (at each fork in the maze a person is equally likely to take any path. Finally, find the EXPECTED VALUE of playing this game.

A) $.50
B) $1.50
C) $2.50
D) $3.50

Answers

I think the answer is A


Which of the following is most likely the next step in the series?

Answers

Answer:

I need more info to answer this question.

Step-by-step explanation:

Find the area (in square inches) of the parallelogram.

Answers

864 inches²

Step-by-step explanation:

2 ft = 24 inch

3 ft = 36 inch

area of parellogram = base × height = 24 × 36 = 864 inches²

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Simplify to a single power of 5

Answers

Answer:

7

Step-by-step explanation:

multiplying exponents adds them together... 5+2=7

The answer is simply seven

Why is your amount owed considered when determining your credit score? BI U S​

Answers

I think it’s what ever you have left after paying, I’m sorry if this is wrong.

Write the fraction in lowest terms.
14/37

Answers

Answer:

14/37

Step-by-step explanation:

14/37 is already in the simplest form. It can be written as 0.378378 in decimal form (rounded to 6 decimal places).

Steps to simplifying fractions

Find the GCD (or HCF) of numerator and denominator

GCD of 14 and 37 is 1

Divide both the numerator and denominator by the GCD

14 ÷ 1

37 ÷ 1

Reduced fraction:

14/37

Therefore, 14/37 simplified to lowest terms is 14/37.

Pls tell me the rest of the angles. Angle 1 is 112.9 degrees

Answers

1. 112.9

2. 67.1

3. 112.9

4. 67.1

hope that helped^^

I need help with this question​

Answers

Answer:

2,540 miles

Step-by-step explanation:

The computation of the fewer miles is given below;

For Space explorer B

= 15,000 miles ÷ 5 hours

= 3,000 miles per hour

For space explorer A

y = 4,600 x

That means in one hour it covered 460 miles

So, the fewer miles would be

= 3,000 - 460

= 2,540 miles

a probability experiment consists of fair eight sided die find the probability of rolling number greater than 4 ​

Answers

Answer:

Probability[Number greater than 4] = 1/2

Step-by-step explanation:

Given:

Total side of die = 8

Find:

Probability[Number greater than 4]

Computation:

Number greater than 4;

[5,6,7,8]

Total number greater than 4 = 4

Probability[Number greater than 4] = Total number greater than 4 / Total side of die

Probability[Number greater than 4] = 4 / 8

Probability[Number greater than 4] = 1/2


A garment Stroe bought so shirts cut the rate of
400 per shirts and sold them at a loss of
1600 Find S.p?
Sop=20000

Answers

Answer:

the selling price is 18,400

Step-by-step explanation:

The computation of selling price is shown below:

Given that

The cost price of the shirts is 20,000

And, there is a loss of 1,600

So, the selling price is

= 20,000 - 1.600

= 18,400

hence, the selling price is 18,400

These are congruent. What is the measurement of E?

Answers

Answer:

44º

we know the angle measures of angles G and F; they match up with angles L and M meaning angle K is congruent to angle E

Find the value of xxx in the triangle shown below

Answers

THIS ANSWER WAS DELTED FROM  BRAINLY

Question: Find the value of xxx in the triangle shown below

Answer: Pg.21607062  

Brainly.com

2-19-21

Answer:

x = 70

Step-by-step explanation:

please help, I legit don't know what to do​

Answers

Answer:

Step-by-step explanation:

Graph given in the attachment represents a linear function f(x).

y = -f(x) represents the reflection of the graph across x-axis.

Therefore, y-coordinates of the points on the graph will get opposite notation after the reflection across x-axis.

Points on the graph of function f(x) are,

(0, -2), (2, 0), (4, 2) and (5, 1)

Therefore, points for the graph y = -f(x) will be,

(0, 2), (2, 0), (4, -2) and (5, -1)

Now we can plot these points to get the graph of y = -f(x)

expand 3(n+6)
This for the test

Answers

Step-by-step explanation:

expanded = 3n + 18

plz mark my answer as brainlist plzzzz if you find it useful ☺️.

multiples that are shared by two or more numbers called

Answers

Answer: Common Multiples

Step-by-step explanation:

Mr. Morales owns a tour bus company and just received the news that fuel prices are going to increase by 125% it is currently $3.40 per gallon what will the cost per cost per gallon after the increase

Answers

Answer:

Step-by-step explanation:

Your answer

Let me think. 125 %,,,. So 1.25* 3.4= 4.25

New price = 7.65

Mark it as Brainlist answer. Follow me.

Aaron usually runs 1 1/2 miles each day. However, on
Tuesday he only ran 2/3 of that distance. How far did
Aaron run on Tuesday?

Answers

1 mile is the correct answer1 ½ ÷ 3 = ½½ x 2 = 1Please let me know if I am wrong.

A large university accepts ​60% of the students who apply. Of the students the university​ accepts, ​30% actually enroll. If 30,000 students​ apply, how many actually​ enroll?

Answers

Answer:

Your answer is

60% apply means 30k *0.6= 18000

30% enroll so,.0.3*18k = 5400

Want more answer then follow me, like and MARK MY ANSWER AS BRAINLIST ANSWER.

I need that urgently.

Answer:

5400 students

Step-by-step explanation:

well 60% of 30000 would be 18000 which is the amount who gets accepted. 30% of 18000 would be who actually enrolls

Plz help I’m stuck on this question

Answers

Answer:

the answer is C

Step-by-step explanation:

bhl

2

i hope it will help you

1.99 ÷ 3 =
2. 125 ÷ 5 =
3. 288 ÷ 36=
4. 540 ÷ 12=
5. 999 ÷ 111=
pls answer ngayon ko na po ito ipapasa explain the answer​

Answers

Hope I helped:)
1. 33
2. 25
3. 8
4. 45
5. 9
1. 33
2. 25
3. 8
4. 45
5. 9

Please help........ thank you

Answers

Hi!

So, first, let's just form the equation:

We know that all the side lengths equal 12 cm.

So the equation will be:

5 + 3 + x = 12

The answer you put in the box is:

5 + 3 + x

To find the value of x, we just solve this equation:

5 + 3 + x = 12

Combine like terms:

8 + x = 12

Same to both sides:

x = 12 - 8

x = 4

I hope this helped, let me know if you have any questions.

Let FICA tax rates be 7.65% on the first $127,200 of income from wages, and 1.45% on any income from wages in excess of $127,200. Her FICA tax is?

Answers

Answer:

The tax is split between employers and employees. They both pay 7.65% (6.2% for Social Security and 1.45% for Medicare) of their income to FICA, the combined contribution totaling 15.3%. The maximum taxable earnings for employees as of 2020 is $137,700.

Correct me if you want If its wrong

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The bonds that link many water molecules together to form a water drop are: ionic nuclear covalent hydrogen List some of the events of the mid-1930s that led to President Roosevelt to give his Quarantine Speech. Write an equation of the line that passes through (2, 1) and is parallel to the line y=2x+7. What is located on the Savannah River about 20 miles upriver from the Atlantic Ocean. It was this site that ? y=3x +4How do you graph this help if you answer something not related to this I will report Review the underlined sentences onpages 2 and 3 of Passage 1.Click or tap the sentence on these pages inwhich the author acknowledges informationthat does not support the author's point ofview. The Law of Conservation of energy states what? a. energy can always be created and destroyedb. energy can be created but not destroyedc. energy can never be created but can be destroyedd. energy can never be created or destroyed A company purchased $2,000 of merchandise on July 5 with terms 1/10, n/30. On July 7, it returned $220 worth of merchandise. On July 8, it paid the full amount due. The amount of the cash paid on July 8 equals: 4. Find the area of theshaded region. Coronado Corporation had income from continuing operations of $10,661,000 in 2020. During 2020, it disposed of its restaurant division at an after-tax loss of $190,500. Prior to disposal, the division operated at a loss of $321,600 (net of tax) in 2020 (assume that the disposal of the restaurant division meets the criteria for recognition as a discontinued operation). Coronado had 10,000,000 shares of common stock outstanding during 2020. Prepare a partial income statement for Coronado beginning with income from continuing operations George wants to buy a new television that is on sale for 1/4 off the regular price of $599.96. The sales tax is 7%. What is the final price of the television including tax? Which North American country is most like the place that you live in terms of its physical characteristics? In 3 to 5sentences, describe the reasons for your choice. What is the function of stanza 4 in the structure and message in the poem? (To his excellency, general washington) The measures of the angles of a triangle are shown in the figure below.Solve for X what is the measure that is complementary to an 20 degree angle Why did people want to fight in ww1? Zach is a high school student who has an after school job at a grocery store. How much will he earn if he earns 75$ a week for 5 weeks? White light is an _____________ mixture of all the colors.a) observable b) unequal c) equal Which is an acceptable Lewis structure for a diatomic nitrogen molecule?OA NENOB.NNO C.:NN:OD.NENOENEN