Mathematics Middle School

PLEASE HELP, ASAP!

Eumin pays $3.56 for 4 juice boxes.

How much would Eumin pay for 7 juice boxes?

Enter your answer in the box.

Answers

Answer 1
First you find how much one juice box costs,
3.56 / 4 = 0.89
Now since each costs $0.89, you multiply that by 7 
0.89 * 7 = $6.23

$6.23 is your answer

Related Questions

please help the temperature in degrees fahrenheit can be estimated by counting the number of times a cricket chirps in one minute write an algebraic expression for the following written expression
the number of chirps divided by 4 added to 37

Answers

x/4 + 37, where x is the number of chirps.

We have been given that the temperature in degrees Fahrenheit can be estimated by counting the number of times a cricket chirps in one minute.

Let us start with assuming the number of chirps as x.

We are supposed to write an algebraic expression for the number of chirps divided by 4 added to 37.

Let us first write an algebraic expression for number of chirps divided by 4. The algebraic expression for this will be [tex]\frac{x}{4}[/tex].

Let us now write an algebraic expression for number of chirps divided by 4 added to 37. The algebraic expression for this will be [tex]\frac{x}{4}+37[/tex].

Therefore, the required algebraic expression is [tex]\frac{x}{4}+37[/tex].

A board game that normally costs $30 is on sale for 25 percent off. What is the sale price for the game?

Answers

$22.50 is the answer because 25 percent of 30 is 7.5, 30 minus 7.5 is 22.5

Plz mark brainliest, glad to help.

What is the apparent solution to the system of equations? y= -2x +3, y=1/3x - 4. Graph the system of eqiations

Answers

the answer to this question is (3,-3)

Two lines, C and D, are represented by the equations given below: Line C: y = x + 14 Line D: y = 3x + 2 Which of the following shows the solution to the system of equations and explains why?

Answers

Answer:

(6, 20), because both lines pass through this point

Step-by-step explanation:

We see that both equations are equal to y.  This means we can set the two equations equal to each other:

x+14 = 3x+2

Subtract x from each side:

x+14-x = 3x+2-x

14 = 2x+2

Subtract 2 from each side:

14-2 = 2x+2-2

12 = 2x

Divide both sides by 2:

12/2 = 2x/2

6 = x

Substitute this into the first equation:

y = x+14

y = 6+14

y = 20

This makes the solution (6, 20).

The solution for the given system of equations are (6, 20).

What is a linear system of equations?

A system of linear equations is a set of two or more equations involving two or more variables. All of the equations must be considered at once in order to find the solution, which is any pair of values that makes each equation true independently.

The given system of linear equations are y=x+14 -----(i) and y=3x+2 -----(ii).

From equation (i) and (ii), we get

x+14=3x+2

3x-x=14-2

2x=12

x=6

Substitute x=6 equation (i), we get

y=20

Therefore, the solution for the given system of equations are (6, 20).

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Plsssssssss help i willmark brainliest

Answers

B : 4 x 12 inch strings and 2 x 8 inch strings
C : Add all the lengths = 84

There are five students of different ages. Their median age is 13 years A) what are two possibilities for the ages of the three oldest students? B) if each student is a different age, how many students must be younger than 13? C) in complete sentences, describe what a median is to another student in the class. Pretend that the student was absent the day you learned about medians.

Answers

A) the median is the middle measurement. Their ages could be 13, 14 and 15.
B) 2 students must be younger than 13
C) Like I said, the median is the middle measurement. If you have a list of numbers, you have to order them and take the middle number.

:) Have a nice day and maybe consider grading this answer brainliest? <3

The answers are explained in the solution.

What is median?

Median in statistics is the middle value of a list of data when arranged in order. It is a measure of central tendency that separates the data into two halves: the upper half and the lower half.

Given that there are five students of different ages. Their median age is 13 years,

A) What are two possibilities for the ages of the three oldest students?

Answer = The median is the middle measurement. Their ages could be 13, 14 and 15.

B) If each student is a different age, how many students must be younger than 13?

Answer = 2 students must be younger than 13.

C) Describe what a median is to another student in the class?

Answer = Since the median is the middle measurement.

If you have a list of numbers, you have to order them and take the middle number.

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Solve. 5x+10+7x=-3+13+7x+12

Answers

For this problem, we can move all the X's to one side and all the regular numbers to the other. 

7x comes over and become -7x 

10 goes over and becomes -10.

5x+7x-7x=-3-10+13+12.

-3-10=-13, which cancels out the positive 13.

-7x+7x=0 which cancels each other out. 

Now, 5x=12

Divide each side by 5.

x=2.4  <--- final answer. 
Hey there! :) 

5x + 10 + 7x = -3 + 13 + 7x + 12

Add like terms.

(5x + 7x) + 10 = (-3 + 13 + 12) + 7x

Simplify.

12x + 10 = 22 + 7x

Now, we have to isolate x. To do that, we must start out by subtracting 10 from both sides.

12x = 22 + 7x - 10

Then, subtract 7x from both sides.

12x - 7x = 22 - 10

Simplify.

5x = 12

Divide both sides by 5.

x = 12/5 OR as a decimal, x = 2.4

~Hope I helped!~

3/4 + 5/7 reduce to lowest term

Answers

3/4 + 5/7 = 3
_
5 is they answer

Each side of ΔABC is 75 units in length. Point D is the foot of the altitude drawn from side A to side BC. Point E is the midpoint of segment AD. What is the length of BE

Answers

The first thing is to calculate the area of the triangle ABC using the Hero's formula. 
Area = √(s(s-a)(s-b)(s-c))
Where s is half the perimeter and a, b, and c are the lengths of the triangle.
s = 0.5(3×75) = 112.5
Since our triangle is equilateral, a=b=c
Area = √(112.5(112.5-75)³) 
        = √5,932,617.188
        = 2,435.696448 square units.
The same area can be found using the formula, 0.5(bh). Where b is the base length and h is the altitude from the base length.
In this triangle, b=75.

∴ 2,435.696448 = 0.5(75×h)

     h = 4,871.392896÷75
        =64.95190528 units

Since E is the midpoint of AD, then DE=h÷2=32.47595264 units

Now we have a right triangle BDE, where BE is the hypotenuse and BD=75/2. 

∴ BE = √((BD)²+(DE)²)
         =√(37.5²+ 32.47595264²)
         = √2,460.935815
         = 49.6078 units.
The answer is 49.6078 units.

SOlution:

Area = √(s(s-a)(s-b)(s-c)).s = 0.5(3×75) = 112.5So,Area = √(112.5(112.5-75)³)         = √5,932,617.188        = 2,435.696448 square units.
2. 2,435.696448 = 0.5(75×h)
     h = 4,871.392896÷75        =64.95190528 unitsDE=h÷2
=32.47595264 units


3. BE = √((BD)²+(DE)²)         =√(37.5²+ 32.47595264²)         = √2,460.935815         = 49.6078 units.

I'm deeply sorry for my inconvenience. Hopefully this is my last question. Will someone help?
(I forgot how to do taxes and discounts)

Answers

For discounts multiply the amount by the percentage. Then subtract your product by your amount.

For taxes do the same thing but instead of subtracting add your product to the amount.

1) C 49.75 
You just have to multiply by the percentage when it's a discount and subtract it from the original amount, 50% becomes .50. 99.50*.5=49.75   99.4-49.75=$47.75

2) D 103.48
You multiply by the percentage (0.04) and then add it to the original price when it's a tax

3) D 4.74
The same process as tax multiply by percentage (.2) and add to the original price

The difference between a markup and tax is the store controls the markups while taxes are usually state-controlled on a certain product (soda 5c or 10c tax is by state)


Find a irrational number between 7.7 and 7.9 explain why it’s irrational

Answers

7.77777777 repeating

Irrational numbers are:

Numbers that repeat 
7.7777777 repeats the number 7 after the decimal

Numbers that CANNOT be written as a simple fraction.
7.7777777 cannot be written as a fraction in simplest form.

Answer = 7.777777777 repeating

~Aamira~

Hope this helped :)
Yeah what he said :) lol yuhhr welcome

Question 5 Unsaved
What is the equation for the sum of four consecutive numbers totaling 86.

Question 5 options:

4n=86

n+4=86

n+n+1+n+2+n+3=86

n+n+2+n++4+n+6=86

Answers

The key to solving this problem is to represent the four consecutive numbers correctly.  They are x, x+1, x+2 and x+3.  Add them up and equate the sum to 86.

"The correct equation representing the sum of four consecutive numbers totaling 86 is [tex]\( n + (n+1) + (n+2) + (n+3) = 86 \).[/tex]

To solve this problem, let's denote the first of the four consecutive numbers as n  

The sum of these four consecutive numbers is given by the equation:

[tex]\[ n + (n+1) + (n+2) + (n+3) = 86 \][/tex]

Now, let's simplify this equation by combining like terms:

[tex]\[ 4n + 1 + 2 + 3 = 86 \][/tex]

[tex]\[ 4n + 6 = 86 \][/tex]

Subtract 6 from both sides to isolate the term with n

[tex]\[ 4n = 86 - 6 \][/tex]

[tex]\[ 4n = 80 \][/tex]

Now, divide both sides by 4 to solve for n

[tex]\[ n = \frac{80}{4} \][/tex]

[tex]\[ n = 20 \][/tex]

So, the first number in the sequence is 20.

The four consecutive numbers are 20, 21, 22, and 23, and their sum is indeed 86.

In the box, complete the first 4 steps for graphing the quadratic function given. (Use ^ on the keyboard to indicate an exponent.) Then print a sheet of graph paper and graph the quadratic function to turn in to your teacher. Be sure to label the axes and vertex.

y = -x2 - 4x - 3

hellllllllllllllp

Answers

Answer:

This was my answer, hopefully it helps!

Final answer:

To graph the quadratic function y = -x^2 - 4x - 3, find the vertex, plot additional points, and connect them with a curve.

Explanation:

To graph the quadratic function y = -x2 - 4x - 3, follow these steps:

Identify the coefficients and constant term: a = -1, b = -4, c = -3.Find the x-coordinate of the vertex using the formula x = -b/(2a):x = -(-4)/(2*(-1)) = -4/(-2) = 2Substitute the x-coordinate of the vertex into the equation to find the y-coordinate:y = -(2)2 - 4(2) - 3 = -4 - 8 - 3 = -15Plot the vertex at (2, -15) on the graph paper.Use the symmetry of the parabola to plot two additional points, equidistant from the vertex:If we move 1 unit to the right of the vertex (x = 3), we find y = -(3)2 - 4(3) - 3 = -9 - 12 - 3 = -24.If we move 1 unit to the left of the vertex (x = 1), we find y = -(1)2 - 4(1) - 3 = -1 - 4 - 3 = -8.Connect the three points with a smooth curve to complete the graph.Label x-axis, y-axis, the vertex, and any other relevant points or lines.

The tires on your bicycle have a radius of 8 inches. How many rotations does each tire make when you travel 700 feet? Round your answer to the nearest whole number.

Answers

First, we want to convert 700 feet to inches:700 feet (12 inches/ft) = 8400 inchesWe know that the diameter is 16 inches, so the circumference is 16π inches or 50.3 inches.We can divide 8400/50.3 to get about 167.1 rotations.

Write a word problem that can be described by the division expression 9 1/3÷2 3/4 . Use complete sentences in your answer. im very bad with word problems

Answers

Final answer:

The word problem involves dividing 9 1/3 loaves of bread into servings of 2 3/4 each to find out the total number of servings.

Explanation:

Lisa baked 9 1/3 large loaves of bread for a community event. She wants to split each loaf into servings that are 2 3/4 each. How many total servings can Lisa make? This problem can be solved by dividing 9 1/3 by 2 3/4, with the result representing the total number of servings.

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5/8 0.67 1.2 3/5 Greatest to least

Answers

1.2
0.67
5/8
3.5

I think this is what it would be.

Write about a real-world situation that can be represented by the equation y=4x.

Answers

The cost of a concert ticket is $4. The equation that shows the total cost, y, of the amount of tickets bought, x, is represented by:

[tex]y=4x[/tex]

If x tickets are bought at $4, the total cost will be y.

Which of theses are log functions?

Answers

The correct answer for the exercise shown in the figure attached, is the first option, which is:

 y=log3(x)

 The logarithmic functions are the inverse of the exponential functions and they have the following form:

 y=logb(x) 

 Therefore, as you can see, the function that has the form of a logarithmic function, is the first option.

Mr. Grayson owns a wood company that sells trees, wood materials, and specialty items created from wood. (Score for Question 1: ___ of 4 points)

1. One of Mr. Grayson’s customers, Zenani, is creating an art wall on which she will display some art in triangular frames. She wants three frames, each in the shape of a right triangle.
(a) For the first frame, Zenani already has two wooden pieces that are 13 in. and 16 in. long. Zenani says that since she wants the frame to be a right triangle, there’s only one possible measurement for the last piece of wood. Is Zenani right? If so, what is that last measurement? If not, explain why not and give all possible measurements for the last wood piece. Round to the nearest tenth.
(b) For the second frame, Zenani asks Mr. Grayson to double the measurements of the first triangular frame to make a new frame in the shape of a right triangle. Will Zenani’s strategy work for the second frame? Explain why or why not.
(c) For the third frame, Zenani asks Mr. Grayson to add the same measurement to each of the sides of the original triangle frame to make a new frame in the shape of a right triangle. Will Zenani’s strategy work for the third frame? Explain why or why not. Answer:   (


Score for Question 2: ___ of 4 points) 2.

Mr. Grayson gets a request from a customer to buy a palm tree of a specific height. Mr. Grayson’s tree nursery is very large and is organized by a coordinate plane map system. He finds a palm tree that he thinks might meet the customer’s specifications. The tree is located at coordinates . He calls his assistant to come over to help him determine the height of the tree. He asks his assistant where she’s located. His assistant says she is located at . Each unit on the coordinate grid represents 1 ft. How far is Mr. Grayson’s assistant from the tree? Round to the nearest tenth. Show your work. Answer:  


(Score for Question 3: ___ of 3 points) 3.
Mr. Grayson orders a box that has a volume of . The box is in the shape of a cube. What is the longest stick that can fit in the box? Round your answers to the nearest whole number. Answer:  


Please answer All of the questions to get the points

Answers

Question 1:
A) No; 9.3 or 20.6.
B) Yes, because the triangles are similar.
C) No, because the triangles will not necessarily be similar.

There is not enough information to answer Questions 2 or 3.

Explanation for Question 1:
A) We are not told which side is the longest, so these two sides could be placed anywhere in the Pythagorean theorem.  They could either be both legs, or one could be the hypotenuse:

Hypotenuse: 13² + b² = 16²
                     169 + b² = 256
                     169 + b² - 169 = 256 - 169
                      b² = 87
                      b = √87 = 9.3

Both legs:   13² + 16² = c²
                   169 + 256 = c²
                   425 = c²
                   √425 = c
                   20.6 = c

B) The two triangles will be similar, since each pair of corresponding sides will have the same ratio (2, since it is doubled).  Similar triangles have the same angle measures, so this must also be a right triangle.

C) Simply adding a value to each side will not preserve similarity.  For example, if we had a triangle with sides 3, 4, and 5, adding 2 to each side would give us 5, 6 and 11.  These do not have the same ratios; 3/5 is not the same as 4/6 or 5/11.

a jar contains blue, red, yellow, and green marbles. p(blue) = 1/4. what type of probability isillustrated and why

Answers

I believe it's theoretical probability, because there are no experiments to base the probability from.
It is an theoretical probability :)



Hope I'm right!!





Give me 5 stars and brainliest if so.


One of the tallest living trees today is the Mendocino Tree found at Montgomery Woods State Park, California. Its height is about 11,200 centimeters. What is this height in scientific notation?

A. 0.112*10'-4cm
B. 1.12*10'4cm
C. 11.2*10'4cm
D. 1.12*10'-4cm

plz help me i need help
i will make brainiest

Answers

1.12 × 104

(scientific notation)


= 1.12e4

(scientific e notation)


11.2 × 103

(engineering notation)

(thousand; prefix kilo- (k))


11200

(real number)

B. 1.12*10'4cm should be the correct answer.

Final answer:

The height of the tree which is 11,200 centimeters is written as 1.12*10'4cm in scientific notation. The conversion involves placing the decimal point after the first digit and then counting the number of places moved, which forms the power of 10.

Explanation:

The question is asking you to express the height of a tree, which is 11,200 centimeters, in scientific notation. Scientific notation is a way of writing very large or very small numbers into a format that is easier to read and understand. It is formatted as a number between 1 and 10 multiplied by 10 raised to a certain power.

To convert 11,200 into scientific notation, we first place the decimal point after the first digit, which results in 1.12. Secondly, we count the number of places moved. In this case, we moved the decimal point 4 places to the left. Therefore, 11,200 cm is equal to 1.12 × 10^4 cm. So, the correct answer is B. 1.12*10'4cm.

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A scatterplot has a negative, linear correlation. Which statement is true about the relationship between the x- and y-values?

A) As the x-values increase, the y-values tend to increase.

B)As the x-values increase, the y-values tend to decrease.

C)As the x-values decrease, the y-values tend to decrease.

D)As the x-values decrease, the y-values tend to vary randomly.

Answers

Answer:

B

Step-by-step explanation:

as the x values increase, the y values tend to decrease

For the Scatter plot negative  the x-values increase, the y-values tend to decrease.

What is Scatterplot?

A linear function is a function that, when plotted, creates a straight line. Typically, it is a polynomial function with a maximum degree of 1 or 0. Nevertheless, calculus and linear algebra are also used to represent linear functions. The function notation is the only distinction. It is also important to understand an ordered pair expressed in function notation. When an is an independent variable on which the function depends, the expression f(a) is referred to as a function.

Given

A scatterplot has a negative, linear correlation.

Which is  negative correlation means that with the increase/decrease in one variable the other variable also decrease/increase,

in which their is inverse proportion between two variables.

so values of x increase and values of y tend to decrease.

Hence option B is best suitable answer.

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What does the phrase “took to It like a duck takes to water” mean in this sentence?

When the young woman started learning how to play the saxophone she “took to It like a duck takes to water”

A) she practiced often
B) she found It natural
C) she played for others
D) she improved gradually

Answers

The answer to this question would be B)She found it natural
Final answer:

The phrase means the young woman found it natural and quickly developed a liking for learning how to play the saxophone.

Explanation:

The phrase "took to it like a duck takes to water" means that the young woman found it natural and took a liking to learning how to play the saxophone effortlessly and quickly. It implies that she had a natural talent and aptitude for playing the instrument. This expression is often used to describe someone who picks up a new skill or activity easily and enthusiastically.

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how would I set up and solve this problem?

Answers

Your figure is good.
You don't need trig.
You have a right triangle with two known sides, so just use the Pythagorean theorem to find the third side.
The sides measuring 325 m and 500 m form the right angle, so they are the legs.
The side you are looking for, x, is the hypotenuse.

leg1^2 + leg2^2 = hyp^2

325^2 + 500^2 = x^2

105,625 + 250,000 = x^2

x^2 = 355,625

x = sqrt(355,625)

x = 596.343

Answer: 596 ft

The volume of a cube is 8 cubic units. What is the length of each edge? Explain how u know.

Answers

The volume of a cube is a side squared. If you square root the volume, you will get the length of a side, or edge.

Each edge is √8.

√8 = 2.83 units
The answer would be 2. To find the volume you have to do V = a^3 and 2^3 is 8. So that's your answer

what is the simplest form of this expression -x(7x+2)+x^2

Answers

For this case we have the following expression:
 -x (7x + 2) + x ^ 2
 Rewriting we have:
 (-7x ^ 2 -2x) + x ^ 2
 Adding similar terms we have:
 -6x ^ 2 - 2x
 Answer:
 The simplified expression is given by:
 -6x ^ 2 - 2x
 The answer would be  -6x ^ 2 - 2x
Equation:
=-x (7x + 2) + x ^ 2
 =(-7x ^ 2 -2x) + x ^ 2
Add similar terms,
 -6x ^ 2 - 2x

 The simplified expression is given by:
 -6x ^ 2 - 2x

need an answer as soon as possible.
asking for a friend.

Use the sequence: 1, –2, 4, –8, . . .
a. Find the common ratio in the sequence.
b. Write a rule for the sequence.
c. Find the next three terms

Answers

Part A

Answer: The common ratio is -2

-----------------------------------

Explanation: 

To get the common ratio r, we divide any term by the previous one

One example:
r = common ratio
r = (second term)/(first term)
r = (-2)/(1)
r = -2

Another example:
r = common ratio
r = (third term)/(second term)
r = (4)/(-2)
r = -2
and we get the same common ratio every time

Side Note: each term is multiplied by -2 to get the next term

============================================================
Part B

Answer:
The rule for the sequence is 
a(n) = (-2)^(n-1)
where n starts at n = 1

-----------------------------------

Explanation:

Recall that any geometric sequence has the nth term
a(n) = a*(r)^(n-1)
where the 'a' on the right side is the first term and r is the common ratio

The first term given to use is a = 1 and the common ratio found in part A above was r = -2
So,
a(n) = a*(r)^(n-1)
a(n) = 1*(-2)^(n-1)
a(n) = (-2)^(n-1)

============================================================
Part C

Answer: The next three terms are 16, -32, 64

-----------------------------------

Explanation:

We can simply multiply each previous term by -2 to get the next term. Do this three times to generate the next three terms

-8*(-2) = 16
16*(-2) = -32
-32*(-2) = 64

showing that the next three terms are 16, -32, and 64

An alternative is to use the formula found in part B

Plug in n = 5 to find the fifth term
a(n) = (-2)^(n-1)
a(5) = (-2)^(5-1)
a(5) = (-2)^(4)
a(5) = 16 .... which matches with what we got earlier

Then plug in n = 6
a(n) = (-2)^(n-1)
a(6) = (-2)^(6-1)
a(6) = (-2)^(5)
a(6) = -32 .... which matches with what we got earlier

Then plug in n = 7
a(n) = (-2)^(n-1)
a(7) = (-2)^(7-1)
a(7) = (-2)^(6)
a(7) = 64 .... which matches with what we got earlier

while the second method takes a bit more work, its handy for when you want to find terms beyond the given sequence (eg: the 28th term)

Emanuel was charged $32\$32$32dollar sign, 32 for a 1429 km14\dfrac29 \text{ km}14​9​​2​​ km14, start fraction, 2, divided by, 9, end fraction, space, k, m taxi ride. What was the cost per kilometer?

Answers

 2 1/4, because you  have to divide 32 by 14 2/9 resulting in the the 14 2/9 to be 128/9 and then flipped, 9/128.Afterwards, cross out the the 32 and 128 since 32 is a factor of 128 to get 1 and 4.Then apply mutiplication 1/1 * 9/4= 9/4 or 2 1/4 

We are required to find the cost per kilometer of Emmanuel.

The cost per kilometre is $2.25 OR $2 and 25cents.

According to the question, the total cost of the journey = $32

The total distance covered during the journey =

14 2/9 km

Therefore, the cost per kilometre can be evaluated mathematically as follows;

Cost per kilometer = cost of the journey ÷ Distance of the journey

= 32 ÷ 14 2/9

By converting 14 2/9 to an improper fraction; we have;

= 32 ÷ 128 / 9

= 32 × 9/128

= (32×9) / 128

= 288 / 128

= 2 32/128

= 2.25 dollar per kilometer

Therefore, the cost per kilometer is $2.25

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Mary Alice is trying to answer the question. How many siblings does each member of her 30 person Biology class have. What is the best way to determine this?

A) Take a sample of 10 members of the class and then find the mean of the responses.

B) Survey each member of her 30 person class to determine how many siblings each person has.

C) Take a survey from the entire school and then look at the responses from students in a Biology class.

D) Look at the school enrollment roster to see how many siblings each member of the class has at the school.

Answers

B
The other answers wouldn't help that much. 

B) Survey each member of her 30 person class to determine how many siblings each person has.

choose the equation that is the standard form of
5y=3-2x
5y-3=-2x 2x+5y=3
2x+5y-3=0
hint the standard form of a linear equation is Ax+By=C

Answers

For this case we have the following equations:
 5y = 3-2x
 5y-3 = -2x
 2x + 5y = 3
 2x + 5y-3 = 0
 The standard form of the equations is given by:
 Ax + By = C
 Therefore, the equation written in its standard form is:
 2x + 5y = 3
 Where,
 A = 2
 B = 5
 C = 3
 Answer:
 The equation that is the standard form is:
 2x + 5y = 3
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