Mathematics Middle School

Key Concepts

• The constant of proportionality is the _______ value of the ratio between two proportional quantities.

• To find the constant of proportionality on a graph, find the y-value when the x-value is
________ .

• You can use ______ reasoning to find the constant of proportionality when the x-value of 1 is not labeled on a graph.

• A proportional relationship is sometimes described by words. Setting up a table to find the _______ of proportionality can be useful.

Key Concepts The Constant Of Proportionality Is The _______ Value Of The Ratio Between Two Proportional

Answers

Answer 1

Answer:

equal, right, answer

Step-by-step explanation:

Related Questions

..... i need help with these 3 questions Q^Q

Answers

Answer:

3/5(x-8)-y = D

Step-by-step explanation:

3/5 (15-8)-1/10

= 41/10 or 4.1

First picture is D
I don’t know the second
Third picture is 5/8

Given the equation y = 3x − 4, what is the value of y when x = 4
A)2
B)4
C)8
D)10

Answers

Answer:

C)8

Step-by-step explanation:

Plug in 4 for x and then solve

Awnser is C or 8, if you put 4x3=12 - 4 it = 8

Identify one point and the slope from the equation y + 4 = 1/3(x - 1)
Options:
m = 4 Point = (1/3, 1)

m = 1/3 Point = (1, -4)

m = 1/3 Point = (1, 4)

m = 1/3 Point = (-1, 4)

Answers

Answer:

m = 1/3 Point = (1, -4)

The slope is 1/3.

The point is 1,-4.

If you are wondering how I got the point, I just unsimplified the equation!

From y+4=1/3(x-1).

To y- -4=1/3(x-1).


The original formula is y-y1=m(x-x1). So we know where the y and the x is, and the slope.

Hope this helped!! :)

moreeeeee hellllllpppppppppplz:D

Answers

Answer:

I think it is by multiplying by 2.

Step-by-step explanation:

Even if it depends on the x, the constant of proportionality just goes by the multiple of 2 as you can see on the graph.

For example, the point that's on ( 2, y) on the graph is the start of it's proportional relationship that is on the line. Here is an example of how it is proportional:

hope it helps in a way:)

Answer:

X and Y have the same constant of proportionality. When X is 4 then Y is  4 as you can see on your picture you attached.

Which of the following statements concerning the linear correlation coefficient are true?

I: If the linear correlation coefficient for two variables is zero, then there is no relationship between the variables.
II: If the slope of the regression line is negative, then the linear correlation coefficient is negative.
III: The value of the linear correlation coefficient always lies between –1 and 1.
IV: A linear correlation coefficient of 0.62 suggests a stronger linear relationship than a linear correlation coefficient of –0.82.

I and IV

II and III

I and II

III and IV

Answers

Answer:

I and IV... ig (:

I and IV because i’m very extremely intelligent

When using re-grouping to solve 21 x 43, what are the four products that would be calculated and then added?
800 + 3
80 + 40 + 60 + 3
800 + 40 + 60 + 3
800 + 40 + 6 + 3

Answers

Answer:

c

Step-by-step explanation:

21×43

=(20+1)×(40+3)

=800+40+60+3

The third one because 21 times 43 is 903 and 800 + 40 + 60 + 3 = 903

A diving board is 12 feet above the ground. The bottom of the pool is 16 feet below the ground. Write and solve an equation that gives the distance from the diving board to the bottom of the pool. Write and solve an equation that gives the distance from the diving board to the bottom of the pool. pls help wit this

Answers

Answer: 12+16=28

Step-by-step explanation: trust me

Wwwwwwwwwwwwwwwwwww

no links or i’ll report you.

Mr townsend needs to make 13 pairs of butterfly for customers for a play. Each pair of wings is made with 3/4 yard of fabric. The fabric costs $8 per yard.


You’ll apply properties of multiplication in the following steps to find the total cost of fabric.


1. Use multiplication to write an expression for the amount of fabric needed to make 13 pairs of wings.


2. Multiply the amount of fabric by the price per yard to find an expression for the total costs.


3. Use the associative and commutative properties to rearrange the terms in the expression to make it easier to calculate. Explain why the rearranged expression is easier to work with.


4. Simplify your expression to find the total costs. show your work

Answers

Answer:

1) 13*3/4

2) 9.75*8 which is $78.

3) which terms? (if you tell me i could do it?) (i dont get what 3 is asking)

4) (which expression...?)

please help me with this math :)

Answers

Answer:

The X is equal to 1.75

Step-by-step explanation:

3.5X2.25=7.875

14/7.875=1.75

Answer: x=1.75

Step-by-step explanation:

rearrange the term: 3.5 (2.25 + x) = 14

the new term: 3.5 (x + 2.25) = 14

Combine multiplied terms into a single fraction, then distribute.  

x = 1.75

Create a proportion from the given set of numbers:

Example: 1, 6, 2, 3
Proportion is 1:2=3:6

25) 3, 6, 7, 14
Proportion is _________________

26) 2, 6, 5, 15
Proportion is _________________

27) 7, 2, 14, 4
Proportion is _________________

28) 2, 2, 1, 4
Proportion is _________________

29) 10, 5, 8, 4
Proportion is _________________

30) 3, 12, 8, 2
Proportion is _________________

Answers

If you do 30 > then it be 320

Answer:

so from the example heres what i think is correct  25) proportion is 3:7= 14:6      26) 2:5=15:2     27) 7:14=4:2      28) 2:1=4:2   29) 10:8=4:5       30) 3:8= 2:12

Step-by-step explanation:

PLEASE READ AND PLS DONT REPORT BECAUSE THIS NEEDS TO BE NOTICED

Answers

Answer:

thats horrible why would some one want to do that like that person needs to get a life

Answer:

seems to be like all other men on here

Step-by-step explanation:

Which statement below is TRUE about |-2| and |-5|?

|-5| is greater than |-2|

|-2| is greater than the |-5|

neither statement is true

Answers

|-5| is greater than |-2| because |-5| is 5 and |-2| is 2 and 5 is greater than 2.

The answer is |-5| is greater than |-2|.

What is a possible reason for choosing the survey question "If you had one superpower what would it be"

Answers

You can say to time travel as you can go back in time to that question and get more powers.

Or.

Say to have unlimited wishes so that you can get any power or thing you ever wanted.
You can say invisibility or super speed are reasonable answers.

C is the midpoint of chord AB and D is the midpoint of arc AB.Given that AB=36 unit and CD=6 unit then What is the radius of circle?

Answers

Answer:

By power of a point, AC⋅CB=DC⋅CE. That is, 12⋅12=6⋅(2R–6).

Then, R=15.

Help Me Please With This

Answers

Answer:

Step-by-step explanation:

Answer:

The chart is adding by 3

Step-by-step explanation:

She is getting payed $21 for every 5 weeks

So every time she gets payed it adds 3

I lied earlier I do need help pls help with the answers I only did the first two but I don't know if I'm right

Answers

i cant see the questions- pls turn off your leds and post again

Which equation has a solution of s = 3/4?

Answers

Answer:

the answer is that you have to follow these rules.

Step-by-step explanation:

1. Simplify each side of the equation by removing parentheses and combining like terms.

2. Use addition or subtraction to isolate the variable term on one side of the equation.

last but not least

3. Use multiplication or division to solve for the variable.

(4,-3) hope it helps

Draw a graph in the coordinate plane of the relationshp between the number of pounds of coffee (x) and total cost (y).

no links

Answers

Answer:

The cost and coffee

Step-by-step explanation:

I graphed it for you

Lin rode her bike 2 miles in 8 minutes. She rode at a constant speed. Complete the table to show the time it took her to travel different distance at this speed. (Please take a picture of the work if its paper/device)

Answers

Answer:

just keep adding 4. for 3 miles, 12 minutes, 4 miles, 16 minutes, etc.

Step-by-step explanation:

The answer is easy just keep adding +4

Which size bottle of ketchup is the best deal with the lowest unit price?

Answers

Answer:

I think the best deal would be 14 oz

explanation:

The 10 0z, 1 oz would be equal to 25 cents and when you add 4 oz the price would have been 3.50 if it was going off of the same ratio as the 10 oz bottle. the 16 oz bottle is the same ratio as the 10 oz bottle and the 18 oz bottle would be 30 cents per oz.

Could someone help me on my assignment?






its a repost because last time i asked i didnt get a full answer nor was it even correct

Answers

first box (under 1) is 7, next box (above 12.5) is 6.5 and the last box is 16

Jessie typed the first 300 words of her essay in 12 minutes. She then got tired and typed the remaining 300 words of her essay in 15 minutes. what was the average speed of Jessie's typing?

Answers

Answer:

22,22 min

Step-by-step explanation:

Answer:

22.5 words per minute

Step-by-step explanation:

To find the average, you add the words per minute together then divide by two.

300/12+300/15= 45/1

22.5 words per minute

so this is for khan academy and I would really like some help with it :)

Answers

Its slope so itll be 4/2 and thats 2

y/x=2

Step-by-step explanation:

Because y=2 and x=4, we would do 4 divided by 2 (2/4=y/x) To get 2

What is the smaller of the numbers 1 and -10/3

Answers

-10/3 is smaller and 1 is bigger.

10.3 is the answer to your question

If the perimeter of a regular pentagon can be expressed as 10s - 20, determine the length of each side.

50 s - 100
5 s - 10
s - 2
2 s - 4

Answers

Answer:

2 s - 4

Step-by-step explanation:

A Regular pentagon means that it has 5 evenly lengthen sides. In other words, the shape with 5 sides has lengths are equal to each other.  

Because the total perimeter as mentioned of the pentagon is 10s - 20,  

dividing it by 5 should find the length of each side!

Equation: (10s - 20) / 5

Once you finish dividing each digit inside the bracket you are done!

= 2s - 4

So that leaves us with 2s-4

Answer:

2 s - 4

Step-by-step explanation:

An artist builds a sculpture out of metal and wood that weighs 14.9 kilograms.
¾ of this weight is metal, and the rest is wood.


How much does the wood part of the sculpture weigh?

Answers

Answer:

Given is a sculpture that is built up of metal and wood, and the weight of this sculpture is 14.9 kilograms.

It says that three-fourth of the total weight is metal and says to find the weight of wooden part.

We can find the weight of metal part and then subtract it from the total weight to calculate the answer.

Step-by-step explanation:

Total weight = 14.9 kilograms.

Metal part = three-fourth of total weight =

Wooden part = 14.9 - 11.175 = 3.725 kilograms.

Hence, the wooden part is 3.725 kilograms.

I think you would have to convert 14.9 kg to fraction and multiply by 3/4 try it

I really need help. My teacher isn't here and it's 8 am. My brain needs food too -.-

Answers

Option B is the correct answer
b is the correct answer, sorry if I’m late too this

Which number line shows the solution set for StartAbsoluteValue 2 p minus 4 EndAbsoluteValue greater-than-or-equal-to 6?
A number line going from negative 6 to positive 6. Closed circles are at negative 5 and positive 5. Everything between the points is shaded.
A number line going from negative 1 to positive 8. Closed circles are at negative 1 and positive 5. Everything to the left of negative 1 and to the right of positive 5 is shaded.
A number line going from negative 6 to positive 6. Closed circles are at negative 5 and positive 5. Everything to the left of negative 5 and to the right of positive 5 is shaded.
A number line going from negative 1 to positive 8. Closed circles are at negative 1 and positive 5. Everything between the points is shaded.

Answers

Answer:

can u add a picture?

Step-by-step explanation:

help me please and thanks

Answers

Answer:

10

Step-by-step explanation:

Firstbll

The answer is 10
explaination:

Solve for b.
3 < b/-4 + 4

61 points

Answers

Answer: b < 4

Step-by-step explanation:

[tex]\\ \sf\longmapsto 3<b/-4+4[/tex]

[tex]\\ \sf\longmapsto 3<b-16/-4[/tex]

[tex]\\ \sf\longmapsto -12<b-16[/tex]

[tex]\\ \sf\longmapsto b>4[/tex]

Done

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