Mathematics Middle School

Which equation represents a proportional relationship? y= 1 /2x or y=2(x+ 1 3 ) or y = 3x or y=−3x+2

Answers

Answer 1
y = -3x + 2 represents a proportional relationship. 

Related Questions

Systems of equations word promblems. I need help answering this questions >. < Tysm. Please explain it also.

3)Flying to kampala with a tailwind a plane averaged 158 km/h. on the return trip the plane only averaged 112 km/h while flying back into the same wind. find the speed of the wind and the speed of the plane in still air

Answers

Answers:
Speed of Wind = 23 km/hr
Speed of Plane in Still Air = 135 km/hr

==================================================
==================================================

Explanation:

First let's go over two definitions

Headwind = wind that is flowing in the opposite direction of the plane's direction of movement; i.e., wind that is coming from the head direction. Headwinds slow the plane down

Tailwind = wind that is coming from the tail of the plane and moving in the same direction as the plane's destination. Tailwinds speed the plane up

=======================

Let
w = speed of wind
p = speed of plane in still air
both speeds are in km/hr

With a tailwind, the plane will speed up so it will go from p to p+w. Therefore, the first equation is
p+w = 158
since the new speed (wind+plane's movement without wind) is 158 km/hr

Similarly, in a headwind, the speed reduces to 112 so 
p-w = 112
because we take the plane's speed p and subtract off the wind speed w that slows down the overall speed

=======================

The system of equations is
p+w = 158
p-w = 112

Add up the equations and notice how w cancels

p+w = 158
p-w = 112
---------
2p+0w = 270

Leading us to
2p = 270
2p/2 = 270/2
p = 135

The speed of the plane in still air is 135 km/hr

=======================

Use p = 135 to find w
p+w = 158
135+w = 158
135+w-135 = 158-135
w = 23

The speed of the wind is 23 km/hr

the sum of two numbers is 70 and their difference is 24.Find the two numbers

Answers

The two answers are 23 and 47. You would subtract 24 from 70 then divide by 2 which would equal 23 then add the 24 back to it which is 47. 23 plus 47 equals 70.

The two numbers whose sum is 70 and has a difference of 24 is 23 and 47

Let

x = smaller number

y = Larger number

y + x = 70 (1)

y - x = 24 (2)

subtract (2) from (1) be to eliminate y

x - (-x) = 70 - 24

x + x = 46

2x = 46

x = 46 / 2

x = 23

substitute x = 23 into (1)

y + x = 70

y + 23 = 70

y = 70 - 23

y = 47

Therefore, two numbers whose sum is 70 and has a difference of 24 is 23 and 47

Learn more about equation:

https://brainly.com/question/16450098

Count the total number of atoms in CaCo2

Answers

3. Ca= 1 atoms Co2= 2 atoms, so your answer is 3 atoms

A system of equations is graphed on the coordinate plane.

2y = 3x − 1
4y = 6x − 2

Select the number of solutions for the system of equations from the drop-down menu.

A. no solution
B. one solution
C. infinitely many solutions

Answers

Maybe it's c, not sure

Below is last month's business income statement for Korey's Comics. Using the information provided in the statement, determine net income for Korey's Comics last month. Korey?s Comics Monthly Business Income Statement Revenue Sales: $6,825 Returns: $215 Net Sales: Cost of Goods Sold Beginning Inventory: $780 Purchases: $1,795 Goods Available for Sale: Ending Inventory: $795 Total Cost of Goods Sold: Gross Profit:: Operating Expenses Wages: $1,460 Rent: $650 Utilities: $185 Advertising: $90 Taxes: $125 Total Operating Expenses: Net Income: a. $2,320 b. $2,510 c. $4,830 d. $6,610

Answers

The Answer is A) 2,320. Here is how we arrive at that number:
Net Sales = Revenue - Returns = 6,825 - 215 = 6610
COGS = Beg Inv + Purch - Ending Inv = 780 + 1,795 - 795 = 1780
Gross Profit = Net Sales - COGS = 6610 - 1780 = 4830

OP Expenses:
Wages     1,460.00
Rent         650.00
Utilities     185.00
Advert      90.00
Tax          125.00
Total Operating Expenses: 2,510

Net Income = Gross Profit - Operating Expenses = 4,830 - 2510 = 2320
Net Income: 2,320

Based on the information given the net income is $2320.

Net income

Using this formula

Net Income = Gross Profit - Operating Expenses

Where:

Net Sales = Revenue - Returns

Net sales=$6,825 -$215

Net sales=$6610

Cost of goods sold= Beginning Inventory + Purchase - Ending Inventory

Cost of goods sold =$780 + $1,795 - $795

Cost of goods sold=$1780

Gross Profit = Net Sales - Cost of goods sold

Gross profit =$6610 - $1780

Gross profit=$4830

Operating Expenses:

Wages     $1,460

Rent         $650

Utilities     $185

Advert      $90

Tax          $125

Total Operating Expenses $2,510

Let plug in the formula

Net income=$4,830 - $2510

Net income=$2320

Inconclusion the net income is $2320.

Learn more about net income here:https://brainly.com/question/15530787

What two ratios are equivalent to 11/12

Answers

(11 x2) (12 x 2)
22 : 24 

or 

(11x3) (12 x 3)
33 : 36

both are equivalent to 11/12


this unit is functions can you tell me rhe pints to graph with the picture?

Answers

a) f(x) + 2: shift the graph 2 units upward

b) f(x - 4): shift the graph 4 units rightward

c) f(-x) - 5: reflect accross the y -axis and shift 5 units dwonward

d) - f(x + 3): shift 3 units leftward and reflect accross the x-axis

e) 2f(x): scale by 2, this will. enlarge the graph vertically

f) f(1/3x): scale by factor 1/3, this will enlarge the graph horizontally

g) f(x - 1) + 3: shift the graph 1 unit rightward and 3 units upward

g) f(2x) - 4: scale the graph by 2 and shift the graph 4 units leftward

Plzzzzzzzzzz help me

Answers

The answer would be the top right graph where none of the lines intersect since it shows that there is no possible real solutions for the system if none of the lines intersect on a certain point.

Remember: If the lines intersect, there is a solution; if the lines do not intersect, there is no solution; if the lines fall on the same line, or the equations are equivalent, then the solution is all real numbers.

A movie made $297.2 million in 22 weeks. How much did the movie make on average each week?

Answers

Final answer:

The movie made an average of $13.509 million each week.

Explanation:

To find the average amount of money the movie made each week, we need to divide the total amount made by the number of weeks. In this case, the movie made $297.2 million in 22 weeks. To find the average, we divide $297.2 million by 22, which gives us an average of $13.509 million per week.

Learn more about Calculating Average here:

https://brainly.com/question/18554478

#SPJ2

A sporting goods company can ship 6 football's in each carton. How many cartons
are needed to ship 75 football's?

Answers

13 because 75/6 is 12.5 but you can't have half a carton so therefore it would be 13. Please mark me brainliest

it takes sami 10 minute to shovel the snow 20 m2 area. he charges 5 dollars for half an hour . how much will he charge to shovel the snow of a sidewalk that has a dimensions of 2m x 40m.

Answers

First, we need to find the area of the sidewalk that he will be shoveling:
[tex]A=l*w[/tex]

In this case, l=2m and w=40m. Then we have
[tex]A=2*40=80m^{2}[/tex]

We know that he can shovel [tex]20m^{2}[/tex] in 10 minutes, so this would take him 40 minutes since 20*4=80. Now we just need to figure out how much this will cost. Since he charges $5.00 per half hour, we need to get 40 minutes in terms of half hours:
[tex]\frac{40}{30}=\frac{4}{3}[/tex]

Last, we just multiply his half-hour rate by the amount of half hours he is shoveling for:
[tex]\frac{4}{3}(5)=\frac{20}{3}[/tex]

I'll let you simplify the fraction.

You need a piece of fabric 5 12 yard long. Which of these is the smallest piece of fabric that would work?

Answers

The answer is 1/2 a yard would be the smallest piece of fabric that would work.

A rectangular flower garden is 8 ft longer than its width. It is surrounded by a brick wall 2 ft wide. The area of the walk is 176ft squared. Find the dimensions of the flower garden

Answers

The dimentions of the rectangular flower garden is
8+x+8+x
16+2x * x = 176

x^2=80
x=4 sqrt(5)
Dimentions:
Length of parallel walls: 8+4 sqrt(5)
Other Walls: 4 sqrt(5)

2.365 x 12.4 ASAP
can you please show work like this how you got it

Answers

The product to that question is 29.326. You had to do some borrowing for this question, but here is the work on how I got the answer. The numbers part of the answer are kind of cut out, but if you work it right, you should get the answer above.
Final answer:

To perform the multiplication 2.365 x 12.4, you need to multiply each digit of the numbers, remembering to keep track of decimal places, and then add all the partial results together. This gives a final result of 29.326.

Explanation:

To solve the multiplication problem 2.365 x 12.4, you use the standard multiplication method, which involves multiplying each digit of the multipliers. Follow the steps below:

Multiply 5 (from 2.365) by each digit in 12.4: 5x4=20, 5x2=10, 5x1=5. Write this number, 11820, under the problem and mark the decimal.Multiply 6 (from 2.365) by each digit in 12.4, but shift one place to the left. Do the same for 3 and 2 in 2.365, shifting each time to the left.Add all the resulting numbers up, making sure your decimal places align correctly (2 places in this problem).

The final result of the multiplication 2.365 x 12.4 is 29.326.

Learn more about Multiplication here:

https://brainly.com/question/5992872

#SPJ2

Erase 3/5 of the shape part below. How much of the original figure will be shaded?

Answers

Okie doke. So, to find what 3/5 of the shape would be above, we should do 2/3 * 3/5. When you multiply straight across, you get 6/15 or 2/5 in simplest form. 2/5 of the original figure will be shaded after you erase 3/5 of the shaded part. The answer is 2/5.

The amount of the original figure shaded is 4/15

How to find how much left

In the figure the shaded part is 2/3.

To remove or erase 3/5 of the shaded part we find the 3/5 and subtract it

= 3/5 * 2/3

= 6/15

how much of the shaded figure left

= 2/3 - 6/15

= 4/15

The amount of the original figure shaded is 4/15

Learn more about shaded part  fractions

https://brainly.com/question/35893917

#SPJ2

The Lovin' Lemon Company sells a 4-gallon jug of lemonade for $24. The Sweet and Sour company sells an eight-pack of one quart bottles of lemonade for $16. Which company has a higher price? Explain your answer.

Answers

Sweet and Sour, as 8 quarts is only 2 gallons, for more than half the price ( if they were equal) than the price if the Lovin' Lemon companies lemonade.

how much will 167 go into 44756

Answers

44,756 divided by 167 is 268.

167 will go into 44756 exactly 268 times, I hope this helps


1. Write 6 less than the product of 2 and x as an algebraic expression

2. Write 3xxyyy using exponents

Answers

1. 2x-6

2. 3x^2y^3

Those should be the answers, I am 100% sure number 2 is correct and number 1 should be as well

Mrs. Gonzalez buys a total of 32 crayons for her classroom. Each pack contains 8 crayons. How many packs of crayons does Mrs. Gonzalez buy ?

Answers

4 packs of crayons she did buy.
4 packs. Just do 32/8 and you get 4

1. In △ABC, GE=27 in.

What is the length of BE¯¯¯¯¯?

2. In △JKL, LO=104 cm .

What is the length of NO¯¯¯¯¯¯?

3. In △RST, SU=45 in.

What is the length of UX¯¯¯¯¯¯?

1.  81
2. 52
3. 15

Answers

1. In △ABC, GE=27 in.

BE = 3(27) = 81

What is the length of BE¯¯¯¯¯?
answer
1.  81

2. In △JKL, LO=104 cm .
NO = 1/2(LO) = 1/2(104) = 52

What is the length of NO¯¯¯¯¯¯?

answer
2. 52

3. In △RST, SU=45 in. 
UX = 1/3(SU) = 1/3(45) = 15

What is the length of UX¯¯¯¯¯¯?
answer

3. 15

Choose an equation that represents the line passing through the point (2, -4) with a slope of 1/2.

Answers

You use the formal y-y1=m(x-x1) to solve this and you plug in the #s so 2 and -4 will be x1 and y1 and 1/2 will be plunges is as m

If bookshelf is 28 inches long how many 7/8 inch thick books will it hold

Answers

so it is 28/(7/8)
which is 32

how do I plot y=2x-4

Answers

The formula: y = mx + b
m = slope or rise/run
b = y-intercept

So, the y-intercept would be -4 and the slope would be 2.

First, you would need to find the y-intercept, -4. 

Next, you would use the slope, 2, to find the coordinate. Remember, 2 = 2/1
You would rise 2 and run 1. 

The coordinates to form a line would be (1,-2), (3,2), and (-1,-6). All you would need to do is draw a line through the coordinates. 

I hope this helps!

Least to greatest: 0.003, 3%, 3/10,3x10

Answers

.003, 3% (.30), 3/10(30), 3x10(30)
They were already in order.
0.003, 3%, 3/10, 3 x 10

0.003,

3% = 0.03

3/10 = 0.3

3 x 10 = 30

0.003, 3%, 3/10, 3 x 10 is your answer

hope this helps

4 2/5 - 1 7/10
2 3/10
2 7/10
3 1/10
2 9/10

Answers

4 2/5 - 1 7/10
= 4 4/10 - 1 7/10
= 3 14/10 - 1 7/10
= 2 7/10

answer
2 7/10
Hello,


4 2/5 - 1 7/10
= 4 4/10 - 1 7/10
= 3 14/10 - 1 7/10
= 2 7/10

Hope this helps

Help me plz asap i need the first question dont answer till u see file

Answers

okay, so with the link we can tell this:

flour and baking soda are equal ratios
salt is one half the ratio of flour/baking soda

A: correct
flour and baking soda as equal ratios

B: incorrect
salt is at an incorrect ratio to flour

C: correct 
salt is at a correct ratio to baking soda

D: incorrect
salt is at an incorrect ratio to baking soda

E: correct
baking soda is at a correct ratio to salt

answers: A, C , E

A relation is a function if _____.

there is exactly one input for each output

there is exactly one output for each input

there is more than one input for each output

there is more than one output for each input

Answers

The answer to the question  is B

C;

In mr. Klein's class, 40% of the students are boys. What decimal represents the portion of the students that are girls

Answers

I think the answer is .6, because if 40% of the students are boys, then 60% of the students are girls. 60% as a decimal is .6. Hope this helps!

The percentage of students that are girls in Mr.Klein's class is 60 % and the decimal value is 0.6

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the total number of boys in the class be = A

Let the total number of girls in the class be = B

Now , the percentage of students in the class that are boys = 40 %

So , ( 40/100 ) of the students are boys

A = 40/100

A = 0.4

Now , the remaining students in the class are girls

So , 100 - 40 = 60

The percentage of students in the class that are girls = 60 %

So , ( 60/100 ) of the students are girls

B = 60/100

B = 0.6

Hence , The percentage of students that are girls in Mr.Klein's class is 60 % and the decimal value is 0.6

To learn more about equations click :

https://brainly.com/question/10413253

#SPJ5

Every week, Mr. Kirkson uses 316 gallon of water to water every 13 square foot of his garden.How many gallons of water does Mr. Kirkson use per square foot to water his garden each week?

Enter your answer in the box as a fraction in simplest form.

Answers

24 4/13 gallons are used to water one square foot of his garden.

Is 2(6-3x) + x equivalent to 2(3x) + x

Answers

NO. You cannot subtract 3x from 6, since they are NOT like terms. 
You can think of it as the 6 does not have an x term, but in 3x, there is an x term. 
Answer:  When "x = 1" ;  "2(6-3x) + x"  DOES EQUAL "2(3x) + x" .
___________________________________________________

2(6-3x) + x = 12 - 6x + x  = 12 - 5x ;

2(3x) + x = 6x + x = 7x ;

Does:  12 - 5x = 7x ?

Add "5x" to each side of equation:

12 - 5x + 5x = 7x + 5x ;

to get:

12 = 7x + 5x ;

12 = 12x ; 

Divide each side of the equation by "12" ; 

12 / 12 = 12x / 12 ; 

to get:  1 = x ;  ↔ x= 1 ;
_______________________________________
Answer:  "When "x = 1" ;  "2(6-3x) + x"  DOES EQUAL "2(3x) + x" .
___________________________________________________
Other Questions
Round 35.78 to the nearest whole second Sherilyn operates a store called the gift garden. her store sells pottery, candles, crafts, and other knickknacks that make good gifts for family and friends. the gift garden is a _____. How did immigrants deal with the challenges they faced? When writing about a work of art which question would contribute most to your evaluation? What is the difference between -5 squared and -5 parenthesis squared? Mrs Kipling ordered flowers for centerpieces.She ordered 168 flowers.She needs to put 15 flowers in a vase for 14 tables.Does Mrs.Kipling have enough flowers for 14 tables? Explain why or why not. Which sentence tells about a goal that has already been achieved? Janelle wants to be the team captain. Janelle has become the team captain. On and off the field, Janelle behaves like a team captain.With her skills, Janelle is sure to be the team captain. Why is a foaming antacid tablet fizzing in water a chemical change? What is the smoothness of the hands flow while playing an instrument called?posturetempofacilityflexibility A 325 ml sample of gas is initially at a pressure of 721 torr and a temperature of 32c. if this gas is compressed to a volume of 286 ml and the pressure increases to 901 torr, what will be the new temperature of the gas (reported to three significant figures in c)? Simplify| -3.9 | + | 3.9 |A. -7.8B. 0C. 7.8D. 8 The primary regions of origin of refugees applying to come to the US in 2007 were __________. A. Africa and Asia B. Africa and the Middle East C. Asia and the Middle East D. Africa and Eastern Europe What was the chief reason for adolf hitler's anti semitism? What position in government was jackson elected to in 1828? There are 105 members of the high school band. Of these members, 1/5 play percussion instruments. How many members play percussion? Write two numbers so thatThe first number is less than the second number, andThe absolute value of the first number is greater than the absolute value of the second number What does robinson cirusoe stuff in his pockets the first time he swims to shipwreck The electoral system represents geographical constituencies, but the ________ represents economic, professional, ideological, religious, racial, gender, and issue constituencies. In quadrilateral ABDC, AB CD. Which additional piece of information is needed to determine that ABDC is a parallelogram? AB CD AC BD AB BD CD BD solve the equation 5n + 5 = 45 Steam Workshop Downloader