Mathematics Middle School

3x - 4y =7 solve for y

This is a literal equation in which you need to isolate the variable 'y'

Answers

Answer 1
3x - 4y = 7...subtract 3x from both sides
-4y = -3x + 7...divide both sides by -4
y = 3/4x - 7/4 <==
Answer 2

The solution of the given equation 3x - 4y = 7 for the value of y in terms of variable x is given by y = (3x - 7) / 4.

To solve for 'y' in the equation 3x - 4y = 7, we need to isolate 'y' on one side of the equation. Here's how you can do it step by step:

Move the term containing 'y' to the other side of the equation by adding 4y to both sides:

3x - 4y + 4y = 7 + 4y

Simplify the equation:

3x = 7 + 4y

Now, we want to isolate 'y' on one side. Start by moving the constant term (7) to the other side by subtracting 7 from both sides:

3x - 7 = 7 + 4y - 7

Simplify the equation:

3x - 7 = 4y

Finally, to get 'y' alone, divide both sides by 4:

(3x - 7) / 4 = y

Therefore, the solution for 'y' in terms of variable 'x' is y = (3x - 7) / 4.

learn more about variable here

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Related Questions

8 - 1/3x = 16
PLEASE ANSWER ITS DUE TOMORROW

Answers

X = 8/(-1/3) therefore the answer is -24

How do you do this word problem?

Answers

3 x 0.66 = 2
3 + 2 = 5
5 x 2 = 10 (for the one half)


10 exercises i believe is your answer

hope this helps

How do I write this number in scientific notation 0.0072

Answers

7.32 x10^-3 pled mark me bran
Move the decimal so there is one non zero digit to the left of the decimal point. The number of decimal places you move will be the exponent. If the decimal is being moved to the left, it will be positive. If it is being moved to the right, it will be negative.


Hope this helps


If its not too much trouble it would mean a lot if I could have brainliest because I have a BIG unit test coming up and I really need points so I can ask questions.     :)

1. Which representation does not show y as a function of x?
A) Answer F
B) Answer G
C) Answer H
D) Answer J

2. Which set of ordered pairs represents y as a function of x?
A) {(-9, 2), (0, 6), (1, -2), (-3, 6)}
B) {(-1, 0), (4, 3), (-7, -3), (-1, -8)}
C) {(3, 2), (-4, -2), (3, 1), (-4, 1)}
D) {(5, 4), (2, 3), (1, 1), (2, 4)}
the pic is for question 1


Answers

the first one is "H" cant help with the second one without seeing the graph

Applying the rules that makes a relation a function:

1. The relation that doesn't represent y as a function of x is: D. Answer J.

2. The only set of ordered pairs showing a relation that represents y as a function of x is: A) {(-9, 2), (0, 6), (1, -2), (-3, 6)}.

Recall:

A relation is a function if every input value (x-value) has only one possible y-value that is related to or corresponds to.

Let's analyze each relation given:

1. All the relations in F, H, and G all have only one y-value assigned or related to every x-value (input). Hence, they all represent y as a function of x.

The graph in J does not represent y as a function of x because of the following:

x =-3 has two y-values, -2, and -3

x  = -2 has two y-values, 0, and -1.

x = -1 has two y-values, 1, and 2.

x = 0 has two y-values, 3, and 4.

Therefore, answer J does not represent a function.

2. Same rule of a function applies here.

From the set of ordered pairs given, only the set of ordered pairs in A represents y as a function of x because it every of its x-values has only one possible y-value assigned to them.

The rest set of ordered pairs have more than one y-values assigned to some of their x-values.

In summary:

1. The relation that doesn't represent y as a function of x is: D. Answer J.

2. The only set of ordered pairs showing a relation that represents y as a function of x is: A) {(-9, 2), (0, 6), (1, -2), (-3, 6)}.

Learn more here:

https://brainly.com/question/7320783

What is the difference between congruent and similar images

Answers

In  a congruent triangle, sides and/or angles have to be the same

In a similar triangle, they have to be proportional

hope this helps
Congruence and similarity may be thought the same, but they are actually very different. If an image is congruent with another, then they are exactly the same, with not a single thing that is different between them. They are identical. If two images are similar, then they aren't congruent. There may be some differences between the two, but not big enough change the way you view the image. 

What is the answer????

Answers

No, because there is no number between 0 and 1.



I think thats the answer but im not sure

find a perimeter of a rectangle with a length of 665 feet and width of 421 feet. Draw your model and solve.

Answers

Well the formula for the perimeter of a rectangle is 2w+2l
w=width
l=length
So it is 2(665)+2(421)=2172

The answer is 2172 feet.

Ms Sims traveled to 42 countries in 60 days . At this rate, how many countries woyuld she travel to in 40 days

Answers

Salutations!

Ms Sims traveled to 42 countries in 60 days . At this rate, how many countries woyuld she travel to in 40 days

Lets solve this!

You need to cross multiply this ---

60 days - 42 countries

40 days - ?

Cross multiply ---

[tex]42 * 40/60[/tex]

[tex]42*40= 1680[/tex]

[tex]1680/60 = 28 [/tex]

Ms Sims traveled 28 countries in 40 days.

Hope I helped (:

Have a great day!

42/60 = 0.7 countries per day

0.7 * 40 = 28

 she will travel to 28 countries in 40 days

What is the value of 3/4÷6/7

Answers

1 17/28 fdgdfgfdgdfgdfgdfgdgdgdgdgdgdg

If x=0 what is the slope of the line?

Answers

The slope of your line would be undefined since your line is just going straight up. The reason for this is while your y value is changing, your x value is always staying the same, meaning your line will just be traveling straight up.

A bag contains 20 balls numbered from 1 to 20. Two balls are selected at the same time from the bag. What is the probability that the two numbers selected do NOT differ by 12

Answers

because there is a logic that 12 is a least amount or number that will be picked

he graph of the function f(x) = –(x + 6)(x + 2) is shown below.

Answers

See attachment although I gather this is not your question. I did the graph(s) for the function, 

Answer:

Which statement about the function is true?

⇒ The function is increasing for all real values of x where

x < –4.

joe is playing a game with a regular die.If the number that turns up is even he will gain 5 times the number that comes up.If its odd,he will lose 10 times the number that comes up.He tosses a 3 express results as an integer

Answers

3 x 10 = 30

3 - 30 = -27

4letter blocks ABCD how many different ways can they be arranged in a row

Answers

There are 24 ways.
1234 1243 
1324 1342 
1423 1432 

2134 2143 
2314 2341 
2413 2431 

3124 3142 
3214 3241 
3412 3421 

4123 4132 
4213 4231 
4312 4321 
there are 4 letter blocks so you can do 
A) DCBA
B) BCAD
c) CDBA
D) ACDB

The price of 6 pretzels is $5.10. Simon and Sofia bought 8 pretzels and shared the cost equally. How much did each person pay?

Answers

Divide 5.1 by 3, this is how you will get the price for two pretzels. Then multiply it by 4 to get the price for 8 pretzels. Lastly, divide that price by two since they split the price equally.
They shared 20.40 equally

An architect is designing a house in which a 104 square foot room and a 130 square foot room share a wall what is the greatest possible integer length of the shared wall -- THIS QUESTION WAS ASKED AND ANSWERED. BUT ANSWERED INCORRECTLY. NOTE THE ANSWER GIVEN CHANGED THE DIMENSIONS TO 140 FROM 104. AND THIS WEBSITE WILL NOT ALLOW ME TO REPORT THAT.

Answers

Both rooms share a common side whose dimension is unknown. Call it x.

Then, the area of both squares have x as common factor.

So, x is the greatest common factor of 104 and 130.

You should know how to calculate the greatest common factor of two integers.

Just find the prime factors and choose the common factors raised to the lowest exponent.

104 = (2^3) (13)

130 = (2) (5)(13)

=> the greatest common factor is 2 * 13 = 26, and that is the greatest possible integer length of the shared wall.

Answer: 26



295 times 67 long multiplication

Answers

19,765 but couldnt u just use a calculator??
Is this what you meant?

math question answer a b and c hurry answer each one

Answers

a. let the distance be d
so we have Δd/Δt=8.8min
Δd= 8.8Δt
d=∫8.8Δt-------(1)

b. d should be positive because the diver is ascending at a positive rate relative to depth

c. d=rt
t=d/r = 32.12/8.8 min
t= 3.65min
b) You cannot travel a negative distance. For example, if you are walking, you cannot walk a negative amount.

c) About 3 minutes and 39 seconds = 3.65 minutes

Alan had 2 mirrors installed in his house.The first mirror was 2 yards and 2 3rds yards wide the second mirror was 2 yards tall and 3 2 halfs wide. Is the area of the first mirror greater than or less than 2 square yards?Explain

Answers

Less because l don't be yelling at me what's wrong wit you.

A _______________________ is a ratio that compares two quantities that are measured in different units.

Answers

Answer:

novady ever answerd iam sorry for you u still using this app???

Step-by-step explanation:

Hey Your still in this app?

A conversion factor is a ratio used to convert quantities measured in different units. It consists of a fraction with equivalent amounts expressed in two different units. This tool enables conversions by multiplying the quantity needing conversion by the appropriate conversion factor.

A conversion factor is a ratio that compares two quantities that are measured in different units. This mathematical tool is essential for converting from one unit of measure to another. Essentially, a conversion factor is a fraction that has equivalent quantities in the numerator and the denominator, but they are expressed in different units. For instance, if we know that 1 inch equals 2.54 centimeters, we can write the conversion factor as either 1 inch/2.54 cm or 2.54 cm/1 inch, depending on the direction of the conversion we need to make.

To use a conversion factor, you multiply the quantity you want to convert by the conversion factor. This will cancel out the original units and introduce the new units, effectively converting the quantity. For example, to convert 10 inches to centimeters, you would multiply 10 inches by the conversion factor of 2.54 cm/1 inch to get 25.4 centimeters.

Given the following linear function sketch the graph of the function and find the domain and range f (x) =-5x+4

Answers

Both the domain and range of this function are all real numbers.

The two things that typically limit a domain are dividing by zero and taking the square root of a negative. Since this function does not have a square root or a denominator, then you must be able to use all real numbers.

5. Two angles are supplements if their sum is 180 degrees. The measurement of one angle is five more than six times its supplement. What is the measurement of the smaller angle?

Answers

25 degrees would be the smaller angle

Simplify 29-4.37+(5.68)

Answers

Your answer is 30.31
Hope this helps!
29-4.37+(5.68)= 30.31

Please help!!

Approximately how many times greater is4×10^7 than 8×10^3?

1. 0.5
2. 500
3. 5000
4. 50,000

Answers

4x10^7 = 40000000
8x10^3 = 8000
40000000/8000 = 5000
So your final answer is 5000
  4×10^7
------------ = 0.5 x 10^4 = 5000
 8×10^3

answer
3. 5000

Please help!!! I dont know how to do this!!please

Answers

for example: 3-4d=13.

add 3 to both sides.

now you should have 4d=16

divide by 4 on both sides

your answer would be d=4
Hello!

For ALL of the equations, you want to solve for the variable (letter) and get it by itself. So,

#1- The equation is 3n + 5 = 6. We want to subtract 5 from the left side, so 3n can be by itself. BUT, if we subtract 5 from the left, we also need to do it to right side. The equation is now: 3n = 1. We then want "n" by itself, so we need to divide "n" by 3 to get "n" by itself. Again, if we do it to the left side, we need to do it to the right. After you simplify, the equation simplifies to: n = 1/3 (in decimal form, the decimal would be repeating {0.33333}).

#2- The equation is 4 + 5x = 1. To get "5x" by itself on that side, let's subtract 4 to that side and the right side. After you do that, it'll be: 5x = -3. Then divide "x" by 5 to each side. The answer is: x= -3/5 (-0.6).

#3- The equation is 4y - 15 = -10. If we want "4y" by itself, we will do the opposite of subtracting 15 to adding 15 to both sides. After you do that, it'll be: 4y = 5. To finish it off, divide "y" by 4 to both sides. That will get you with: 
y = 5/4 (1.25).

#4- The equation is 3 - 4d = 13. To get 4d by itself, let's subtract 3 to each side. That'll leave you with: -4d = 10. Now divide d by "-4" to both sides. The answer is: d = -10/4 (-2.5).

#5- The equation is 8 = 9x - 7. Let's add 7 to each side so that 9x can be by itself. After we do that, it's simplified to: 15 = 9x. Finish it off by dividing "x" by 9 to both sides. That'll leave you with the answer: x = 15/9 (in decimal form, this decimal would be repeating {1.66666}). 


Anyone can fix my mistakes if they are wrong. I hope this helps!

May

3-74. Mentally calculate the following products.  Use the rule for decimal multiplication to write an equation in which the decimal point is written in the correct location.  Homework Help ✎ (−0.04)(−0.1)  (0.03)(−0.02)  (0.7)(0.4)  Stacey said, “Stephanie, look at my answer to the last problem, 0.7 · 0.4 = 0.28.  Usually when I multiply, I get a bigger answer than the numbers I start with.  Twenty-eight hundredths, 0.28, is less than either 0.4 or 0.7.  I must have made a mistake.” Stephanie responded, “Well, one half times one half is one fourth, and one fourth is less then one half.  I think when you multiply by a fraction or decimal less than one, you get less than you started with.” Write a sentence or two about who you think is correct and why.

Answers

Final answer:

Stephanie is right; when you multiply decimals less than one, the result is smaller than the original numbers. The multiplication of (-0.04)(-0.1) is 0.004, (0.03)(-0.02) is -0.0006, and (0.7)(0.4) is 0.28. These examples illustrate the rule correctly.

Explanation:

Stephanie is correct in her explanation to Stacey. When multiplying two numbers where one or both numbers are less than one, the product will be smaller than the original numbers. This is because you are essentially taking a fraction of each number. Let's confirm this by calculating the products of the given examples.

Multiplication of Negative Decimals: The product of negative decimals will be positive (since a negative times a negative equals a positive). For (-0.04)(-0.1), the product is 0.004.Multiplication of Mixed Decimals: The product of a positive and a negative decimal will be negative. For (0.03)(-0.02), the product is -0.0006.Multiplication of Positive Decimals: As in Stacey's example, (0.7)(0.4) equals 0.28, which is indeed less than either 0.4 or 0.7 because you're multiplying fractions of a whole number.

Moreover, in scientific notation, moving the decimal and using placeholders is crucial for accurate answers. Multiplying 2.4 by 100 moves the decimal two places to the right, giving us 240.

Jessica can run 7.5 miles in 1 hour. How many minutes does it take her to run each half mile?

Answers

well there are 15 half mile in 7.5 mile so divide 60 by 15
7.5 miles in 1 hour 

1 hour = 60 minutes 

[tex] \frac{7.5}{60} = \frac{0.5}{y} [/tex]

0.5 * 60/7.5 = 30/7.5 

= 4 minutes for half a mile 

Simplify the following expression. +−16x2+−5x3x29

Answers

Greetings!

(Assuming that the "x" signifies a multiplication sign, rather than a variable.)

Follow PEDMAS.
[tex]=+(-16)*2+(-5)*3*29[/tex]
Simplify.
[tex]=-16*2-5*3*29[/tex]
[tex]=-32-5*3*29[/tex]
[tex]=-32-15*29[/tex]
[tex]=-32-435[/tex]
[tex]=-467[/tex]

Hope this helps.
-Benjamin

Help me please please

Answers

Since 4 5/6, 5 1/5,and 4 11/12 all round to 5, your answer is 5 6/7. 5 6/7 round up to 6.

Hope this helps!

May I have some help?

Answers

For whatcha problem hun
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