The system of equations can be solved using linear combination to eliminate one of the variables. 2x − y = −4 → 10x − 5y = −20 3x + 5y = 59 → 3x + 5y = 59 13x = 39 Which equation can replace 3x + 5y = 59 in the original system and still produce the same solution?
2x – y = –4
10x – 5y = –20
7x = 39
13x = 39

Answers

Answer 1

Answer:

10x – 5y = –20

Step-by-step explanation:

Answer 2

Answer:

13x=39

Step-by-step explanation:

just did the test on edgen 2020


Related Questions

Which of the sets of ordered pairs represents a function? (1 point)
A = {(2,7), (1,-5), (7, 2), (2, -9)}
B = {(5,3), (-2,-9), (-3, 8), (9,3)}
a.
Only A
b.
Only B
C.
Both A and B
d.
Neither A nor B

Answers

Answer:

Only B

Step-by-step explanation:

A has 2 pairs with the x as the number 2, so they are not functions.

B has all independent pairs with their own numbers

So only B is the correct answer.

What is the degree of this polynomial?

2x4 - 3x5 + x

Answers

Answer:  Polynomial Degree: 5

Leading Term: -3x to the 5th power

Leading Coefficient: -3

The polynomial degree is 5

Step-by-step explanation:

A polynomial is an expression that has more than two algebraic terms.

The degree of a polynomial is the value of the highest power in the given polynomial.

The degree of the polynomial 2[tex]x^{4}[/tex] - 3[tex]x^{5}[/tex] + x is 5.

What is a degree of a polynomial?

A polynomial is an expression that has more than two algebraic terms.

The degree of a polynomial is the value of the highest power in the given polynomial.

Example:

x³ + 2x² + 4x + 3 is a polynomial.

x³ + 5x² + 8x + 3 is a polynomial.

The degree is 3.

We have,

2[tex]x^{4}[/tex] - 3[tex]x^{5}[/tex] + x

This is a polynomial since it has more than two algebraic terms.

The highest power of the algebraic terms given is 5.

[tex]x^{4}[/tex], [tex]x^{5}[/tex], and x are the algebraic terms in the given polynomial.

Thus,

The degree of the polynomial 2[tex]x^{4}[/tex] - 3[tex]x^{5}[/tex] + x is 5.

Learn more about polynomials here:

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Find the equation of this line

Answers

Answer:

y = 2x + 4

Step-by-step explanation:

The slope is 2/1 (or just 2) and the 4 is the y-intercept

Answer:

y = 2x + 4

Step-by-step explanation:

B is the y-intercept. The y-intercept of this graph is (0,4).

Rise over run, count up and to the right giving you 2/1 which equals 2.

Thus, y = 2x + 4

x + 4y > 8
What is the y-intercept

Answers

Answer:

the y-intercept is (0,2)

I hope I could help :)

Step-by-step explanation:

Y in erceopes the 4 like in 4y

What is the slope of w=1.5t+10

Answers

Answer:

The slope is 1.5

Step-by-step explanation:

Slope is the coefficient before the variable. In this case our variable is t, so, that means the thing that is multiplying it (coefficient) is the slope. This means the slope is 1.5

The regular price of the glove is $185. It is on sale for 15% off. Sales tax is 8%. What is the cost of the baseball glove after the discount and sales tax are applied?

Answers

Answer:

The answer is 33.3

Step-by-step explanation: I don't have time to explain

How many titles 250mm square will be needed to cover s kitchen floor of length 3m and breath 2.5m . The answer should be in the unit metre square​

Answers

Answer:

30,000 tiles

Step-by-step explanation:

Area of tile = 250mm^2 = 0.25m^2

Total area of kitchen = 3*2.5 = 7.5m^2

No of tiles = 7.5/0.25 = 30,000 tiles

The table contains a hospital's probability distribution chart of the number of babies born per day for a week. Determine the missing probability in the distribution, and then answer this question: What percentage of time should a sufficient number of nurses be on duty to care for at least seven babies?

Answers

Answer: 62.5%

Step-by-step explanation:

The probability of more than seven babies being born on any given day is (0.4375 + 0.1875+0)= 0.625. So a sufficient number of nurses to be on duty to care for at least seven babies is needed 62.5% of the time.

Whiskers the cat weighs 2 2/3 kg. Piglio weighs 4 kg. For each question, write a multiplication and a division equation, decide whether the answer is greater or less than 1, and then answer the question.


How many times as heavy as Piglio is Whiskers?

[ Select ]

How many times as heavy as Whiskers is Piglio?

[ Select ]

Answers

Answer:

a. 1/2

b. 2

Step-by-step explanation:

Whiskers' weight is 2 and Piglio's weight is 4. For getting the first question we need to see what percentage of Piglio's weight is Whiskers' weight. Lets say that Piglio's is 100%, so the following ratio must be true:

2/4 = x/100

The ratio between 2 and 4, the weights, must be equal to the ratio between the relative percentages. So, x is, multiplying both sides by 100:

200/4 = x

50 = x

So, x, that is the relative weight of Whiskers relative to Piglio is 50, this is, Whiskers is 50%, or 1/2, times as heavy as Piglio.

With it we get the answer for the second, that is easier. How many times as heavy as Whiskers is Piglio? Well, we can do the same that before:

4/2 = y/100

Now we use Whiskers weight as reference as we want to campare Piglio to Whiskers. So y is the weight of Piglio, and its ratio to Whiskers must fit the relation 4/2. Multiplying both sides by 100:

200 = y

So, Pilgio is 200%, or 2 times, as heavy as whiskers.

i hoped this helped.

Answer:

Step-by-step explanation: Piglio = p      Whiskers = w

P = x times W    (multiplication equation)    W = P/x  (division equation)

4 = x times 2 2/3

4 = x times 8/3                     answer greater than 1

4 = x* 8/3

find for x

x = 4 divided by 8/3

= 12/8

= 1  1/2

answer  Piglio is 1  1/2 times heavier than Whiskers

Whiskers is x times P     answer will be less than 1

W= x times P    Multiplication equation        

2 2/3 = x times 4

8/3 = 4x  (divide both sides by 4 to isolate the variable)

8/3  divided by 4 = 8/12    

answer Whiskers is 8/12 or 2/3 as big a Piglio

Proportionality math

Answers

Answer:

no bc the graph shows a slope of 12

Step-by-step explanation:

150 is 25% of what number? Four students solved this problem using equivalent ratios. Choose the student whose
work is correct.
Liam's work
Yasmin's work
Bill's work
Isabella's work
part
part
part
whole
part
whole
О
whole
whole
25 x 6
100 x 6
150
600
25 x 6
150 x 6
150
900
100-5
25:5
20
5
150:6
1006
25
16.67

Answers

Answer:

it is a

Step-by-step explanation:

hop this helps i would appreciate it if you mark me brainlest

Find the zeros of the quadratic function

Answers

Kxkdktclycyofofyllyclcoyc

x + 4y = -8
5x - 4y = -16

Answers

Answer: for the 2 one x=  4 /5y + -16/5

for the first one x=−4y−8

Are they 2 sperate questions?

If yes here

1. x + 4y = -8

4y=−8

Step 1: Add -4y to both sides.

x+4y+−4y=−8+−4y

x=−4y−8

Answer:

x=−4y−8

2. 5x - 4y = -16

5x−4y=−16

Step 1: Add 4y to both sides.

5x−4y+4y=−16+4y

5x=4y−16

Step 2: Divide both sides by 5.

5x =  4y- 16

 5            5

5 x/4  = 5y + -16

               5

x=  4 /5y + -16/5

what is cos 60°? (ap3x)

Answers

Answer: 1/2

Step-by-step explanation:

Answer:

1/2 or .5

Step-by-step explanation:

cos(60) = .5

*Calculator must be in degree mode*

1 1/2
1
Emma and her 3 friends were thirsty, so she shared
2
gallon of lemonade equally among 4 people. How
much lemonade did each person get?
1
-4
2

Answers

Answer: 64 ounces each

Step-by-step explanation:

1 gallon = 128 ounces

128 ounces x 2 gallons = 256 ounces

256/4 = 64 ounces

OR

Each friend got 1/2 gallon each.  If there are 2 gallons then there would be 4 'halves'. 2 halves per gallon and there are 2 gallons.

(I am not sure what the answer choices are.)

Answer:

1/8 got it right on edg

Have a good day :)))

Step-by-step explanation:

Will mark branniest if gotten right

Answers

Answer:

i think it is 34

Step-by-step explanation:

both triangles are the same one has 84 and 36 so he other has 86 and 34 then they are = hope this helps.

Jacob earns $7.25 an hour at his part-time job, and earns $9 each time he mows the lawn for his mother. He graphs the amount of hours he works at his job (x) and the number of lawns he mows (y) to determine how to earn at least $300. Which type of boundary line should he use in his graph?

Answers

Answer:

He wants to win $300.

he mows the lawn y times, and he works x hours in his part time job,

Then we will have the equation:

y*$9 = amount that he wins by mowing the lawn

x*$7.25 = amount that he wins in his part time job.

Adding those, we must get $300.

y*$9 + x*$7.25 = $300.

We can isolate y and get

y = ($300 - x*$7.25)/$9 = (300/9) + x*(7.25/9)

This is the boundary line that he should use in the graph.

now, with if he works x = n hours, he can input that in this equation and find the number of times that he must mow the lawn in order to reach to the desired $300.

The graph of the line is below.

Any point in that line (in the first quadrant) is a possible way for Jacob to make the $300

Outside of the first quadrant this equation does not work, because it has negative values of y or x, and we can not have things like "negative hours of work", so we only look at the first quadrant.

1.The ink made a huge _____
A.plain b.drain c.stain

2.the movie was so sad that I ____ A.tried b.cried c.pried

the moonlight____on the water
A.shone b.scone c.drone

4.she tried to ____everything into one suitcase
A.she b.gram c.cram

5.dont ____me for your mistakes.
A.flame b.blame c.shame

6.a reporter said that the____ rate is going down
A.grime b.drive c.crime

7.we saw a ____ of sheep in the meadow.
a.flock b.clock c.crock

8.some people like ____ about their good graders
A.drag b.shag c.brag

9.The acrobat did an amazing ____ on the high wire.
A.shunt b.stunt c.blunt

10.it was a _____ to meet the movie star
A.shrill b.trill c.thrill

11.there are many large stones and pebbles in that _____
A.stream b.sream c.dream​

Answers

Answer:

1. C. Stain

2. B. Cried

3. A. Shone

4. C. Cram

5. B. Blame

6. C. Crime

7. A. Flock

8. C. Brag (and it should be "Some people like TO brag about their good grades.")

9. B. Stunt

10. C. Thrill

11. A. Stream

Hope This Helps!

Answer:

c

b

a

c

b

c

a

c

b

c

a

Step-by-step explanation:

i have four and one half squares and i want to divide them by one third. how many pieces would i have

A. 15
B. 13 1/2
C.13
D.5

Answers

B.
....................

Woodhill Elementary School’s 3rd and 4th-grade classes are planning a joint field trip. There is a total of 464 students in these two grades and only 45 seats per bus. How many buses will be needed to fit all the students? Think carefully about your answer.

Answers

Step-by-step explanation:

i say you would multiply or add

Helpppp please I don’t understand

Answers

Answer: what are the options when you click the box

Step-by-step explanation:

What are the options when u click the box

A scale drawing of Coriane's bedroom floor is shown
below. All given dimensions are in feet, and all
intersecting line segments shown are perpendicular.
Corinne wants to completely cover the floor with
square hardwood tiles. Each tile has a side length of
I foot, and no tiles will be cut. How many tiles will
Corinne need to cover the floor?
6
9
A. 63
B. 69
C. 74
D. 79
E. 84
5

Answers

Answer:

answer is yes it does have some fun and easy way out

In the student council election, Davina received 50 votes, Binh received 40 votes and Eden received 80 votes. What is the ratio of Binh’s votes to Davina’s votes in simplest form?
A
5 to 4

B
4 to 5

C
1 to 2

D
4 to 17

Answers

Answer:

4:5

Step-by-step explanation:

Binh's = 40

Davina's = 50

40:50 = 4:5

Solve for x

4/x-3 + 2/x^2-9 = 1/x+3

Answers

4/(x-3) + 2/(x²-9) = 1/(x+3)

4/(x-3) + 2/(x+3)(x-3) = 1/(x+3)

(4(x+3)+2)/(x+3)(x-3) = 1/(x+3)

(4x+12+2)/(x-3) = 1

4x +14 = x - 3

4x - x = -14-3

3x = -17

x = -17/3

The solution of the given equation is the value of variable x is  -17/3.

What is the equation?

The equation is defined as mathematical statements that have a minimum of two terms containing variables or numbers that are equal.

The equation is given in the question

⇒ 4/(x-3) + 2/(x²-9) = 1/(x+3)

⇒ 4/(x-3) + 2/(x+3)(x-3) = 1/(x+3)

⇒ (4(x+3)+2)/(x+3)(x-3) = 1/(x+3)

⇒ (4x+12+2)/(x-3) = 1

⇒ 4x +14 = x - 3

⇒ 4x - x = -14-3

Apply the subtraction operation,

⇒ 3x = -17

Divided 3 into both sides of the equation,

⇒ x = -17/3

Therefore, the solution of the given equation is the value of variable x is  -17/3.

Learn more about the equations here:

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Find two numbers that multiply to be 12 and add up to be -8

Answers

Answer:-6 -2

Step-by-step explanation:

please please help!!!!

Answers

subject: dolphin
verb: swam
adjectives: young
prepositional phrase: i think is near

Answer: see explanation

Step-by-step explanation:

the dolphin is the subjects

Swam is the verb

Young & near adjectives

near the is the prepositional phrase

9y= 5/7
solve as a fraction

Answers

Divide both sides by 9
5/7 times 1/9 = 5/63
Y = 5/63

Answer:

y=5/63

Step-by-step explanation:

At the grocery store grapes cost $2.55 for 2 pounds. At the farmers market grapes cost $3.55 for 3 pounds. What is the unit rate for each store? Which is ther better deal?

Answers

Answer:

farmer dude's

Step-by-step explanation:

U divide the price by the quantity. then you get unit. I did it for both n got 1.18 for farmers and 1.27 for the store's

I hope I got it right lol

At grocery store
2 pound grapes cost =$2.55
1 pound grapes cost = $1.275
At farmers market
3 pound grapes cost =$3.55
1 pound grapes cost = $1.183

So farmers market deal is the better deal.

What is the approximate circumference of the circle shown below?

Answers

It’s 97.39
The equation to find the circumference is ( C=2πR )

Solve the inequality of x-5>6. Tell if the circle is open or closed and which direction you would shade.

Answers

Answer:

Move all terms not containing  

x  to the right side of the inequality.

Step-by-step explanation:

inequality form: x>11

interval:(11,infinity)

Answer:

x > 11

when putting this inequality on a number line, the circle would be opened, and the arrow would go to the right,

when graphing this inequality, it would have a dashed line, and you would shade the right side.

I hope this helps :)

Step-by-step explanation:

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