Mathematics Middle School

NO LINK SPAM OR REPORT: Tell whether x and y show direct variation. Explain your reasoning. If so, find k.

x−y=0

NO LINK SPAM OR REPORT: Tell Whether X And Y Show Direct Variation. Explain Your Reasoning. If So, Find

Answers

Answer 1

Answer:

2. yes; the equation can be written as y = kx; k = 1

Step-by-step explanation:

x-y = 0

That means x and y have to be the same value.

If you multiply a number by 1, you get the same thing.

If you multiply x by one, you get y (the same value).

Hope this helps!

Related Questions

pls help quick time on this hurry only if you actually have the answer

Answers

Answer: D 13 4/5 this is the right answer
Its D if u multiply the whole number with the denominator and add the number on top of the fraction and multiply the three then u get 69/5 and then make it into a simplified fractions you get the andwer

PLEASE HELP!! IM DESPERATE, PLEASE SHOW YOUR WORK TOO
To make his famous chocolate cake, a baker uses chocolate that is 75% cocoa. Because his supplier delivered 100 lb of chocolate with 70% cocoa, The baker needs to melt and mix the delivery with chocolate that has 90% cocoa. How much of the 90% chocolate should he use?

Answers

The answers 33 1/3 pound

answer: 33 3/1 pound bc yu need to add all of them up then yu get your answer

The model represents an equation. What value of x makes the equation true?

Answers

Answer:

B: 9/4

Step-by-step explanation:

Answer:

9

Step-by-step explanation:

Help I don’t understand this

Answers

Step-by-step explanation:

So lets just say the recipe calls for 1 cups flour to 2 cups sugar, if you use 4 cups of flour how many cup would you need of sugar? well you would * 2 by the same amount you multiplied to get 4 cups of flour. so you would need 4 cups flour and 8 cups sugar!

I hope this helps you understand

Change the following to the unit shown.

A) 3.4kg=_______g B) 5 litres=________ml C) 620cm=_______m
D) 4m=________cm E) 7cl=___________ml F) 3800m=________km

Answers

Answer:

a) 3400g

b) 5000ml

c) 6.20m

d) 400cm

e) 70ml

f) 3.8km

Step-by-step explanation:

a) There are 1000g (gram) in every 1kg (kilogram)

b) There are 1000ml (millilitre) in every 1l (litre)

c) There are 100cm (centimetre) in every 1m (metre)

d) There are 10ml (millilitre) in every 1cl (centilitre)

e) There are 1000m (metre) in every 1km (kilometre)

A rectangular box is designed to have a square base and an open top. The volume is to be 2048in.3

What is the minimum surface area that such a box can have?

Answers

Answer:

x=y=z in 3 dimensions. So, you have x2y=4=x3⟹x=y=3√4.

Step-by-step explanation:

Answer:

hi

Step-by-step explanation:

Let x = the length of the sides of the base and h = the height:

Volume = (area of base)(height)

V = x2h

2048 = x2h

2048/x2 = h

Surface Area = area of base + 4(area of vertical side)

SA = x2 + 4xh

Eliminate the h by using 2048/x2 = h:

SA = x2 + 4x(2048/x2)

SA = x2 + 8192 x-1

Take the derivative of SA wrt x, set it to zero, solve for x.  Plug that value of x into the surface area equation to find the minimum surface area.

help help help help help help

Answers

Answer:

C

Step-by-step explanation:

Convert any mixed numbers to fractions.

Then your initial equation becomes:

4 3/10×5 3/10

43

10

×

53

10

Applying the fractions formula for multiplication,

=43×5 3/10×10

=

43

×

53

10

×

10

=22 79/100

=

2279

100

Simplifying 22 79/100, the answer is

=22 79/100

a meal cost 30$ before tax and tip.
there is 7% sales tax. After tax, a 20% tip is added
what is the total after tax and tip

Answers

Answer:

this depends if the 20% is after tax if it is then the answer is 32.1+6.42

sorrry but since you get the answer you can add the bit you need

Step-by-step explanation:

Answer:

$38.52

Step-by-step explanation:

30 times 1.07 is x (x is now the cost after 7% sales tax)

x (which is 32.1) times 1.20 is y (y is the solution after 20% tip)

which y is equal to 38.52

Hope you understand <333

What is the constant of proportional for y=-1/2x

Answers

Answer:

-1/2 ?

Step-by-step explanation:

If 4 tickets to a show cost $9, find the cost of 14 tickets.

Answers

Answer:

$31.50

Step-by-step explanation:

You would divide 9/4 which gets you 2.25, then you multiply 14x2.25 to get 31.5

Answer:

31.50

Step-by-step explanation:

We can write a ratio to solve

4 tickets             14 tickets

----------------- = ------------------

9 dollars             x dollars

Using cross products

4x = 9*14

4x =126

Divide each side by 4

4x/4 = 126/4

x =31.50

Kevin is creating a target for a game that will be played at the school's carnival and needs to put red tape in the shape of an "x" as shown below. If the area of the square board is 25 square feet, how many feet of tape will he need?

Answers

Answer:Kevin need 14.14 feet of red tape  

Step-by-step explanation:

Given: (Figure Attached)

Area of Square  = 25 square feet

As we know

Area of square = length x width = a x a = 25

a * a = 25

a =  ±5 by taking square root both sides

It means a = 5 as the length can not be negative

Now we know the length of sides of square and as shown in figure we can break the figure in two triangles,

By using Pythagoras theorem on one triangle we will find the length of one line of x and then multiply the x with 2 to get the overall feet of tape.

 =  

=  

x = ± 7.07 It means x = 7.07

Now the total tape required is 2 * x = 2*7.07 = 14.14

Maggie says the LCM of 8and 12 is 24. Her friend glen says the answer is 4. Who is right? Explain.

Answers

Answer:

Maggie is correct because Glen found the greatest common factor (GCF).

Step-by-step explanation: Brainliest Pls Pls Pls

Answer:

Maggie

Step-by-step explanation:

The LCM or Least Common Multiple is the Biggest Multiple, So between those two, it would be 24. Glen found the GCF or Greatest Common Factor.

is 0.81 x 8.01 an overestimate?

Answers

All I know is the answer is 6.4881

The library has 3,121 magazines. Each bin holds 73 magazines. How many magazines will be in the partially filled bin?

Answers

Answer:

55

Step-by-step explanation:

3121/73=42 R55

Answer: 55 magazines will be in the partially filled bin.

Step-by-step explanation:

3,121 / 73 = 42.75, or 42 whole bins.

42 * 73 = 3,066

3,121 - 3,066 = 55

what is 9 to the 2nd power - (6 to the 2nd power x 2)-1

Answers

Answer:

8

Step-by-step explanation:

Answer:

The answer is 8.

Ellie got a new job; the pay structure is described below. How much money will Ellie make in a week where she works 25 hours and has $3500 in sales. Hourly Pay Rate $14.50. Comission 9%.

Answers

Answer:

$677.50

Step-by-step explanation:

you will need to find the amount she makes first which will be the 25 hours x the pay rate which is 14.50 that will be $362.50 then you will need to find the comission % which will be  

3500=100      

?       = 9

cross multiply then you get $315 add the two answers together to get $677.50

the answer is 677.50

Please help me and please answer correctly. last try, please

Answers

Answer:

B

Step-by-step explanation:

The y-intercept is 0,2 so that rules out C and D.

We then see that A cannot be true so it must be B.

P.S. I'd love to have brainiest plz!

The question is below.

Answers

The ratios are 4:2:3:3 = 1 : 1/2 : 3/4 : 3/4
The ratios are 4:2:3:3 =1

Pls provide an explanation if possible

Answers

Answer:

6661 divided by 2

Step-by-step explanation:

idrk

It is a trick question it says all the stuff about how much they collected to distract you actually your dividing the money they won in half so 300 600 divided by 2 is 300

Help please?! I don't really know what the right answer is

Answers

Answer:

the answer is x=1

Step-by-step explanation:

-6x+10=4x+20

10x=10

x=1

The answer is X it’s equal 1

DUE IN A FEW HOURS HELP PLS

Answers

Answer:

It's B

Step-by-step explanation:

If you rotate it until the 6m is on the bottom, and you flip the triangle, you'll see that they have an equal ratio for all sides.

Answer:

I know somebody answer but its B

Step-by-step explanation:

The model shows the addition expression 18 + 12.

A model containing 3 rows of 6 orange squares and 3 rows of 4 blue squares.

One expression that is equivalent to this sum is
.

Answers

Answer:

It's simple.

Step-by-step explanation:

now since you solved some of it, 18 + 12 = 30 An expression that is equivalent to this sum is 30.

Answer:

3(6+4)

Step-by-step explanation:

Please Help! Show your work

At the school store, you buy 4 pencils and an eraser. The cost of the eraser is $0.85. Your total cost is $1.45. Write an EQUATION to find the cost of one pencil.

Answers

Answer:

cost of one pencile is 0.15

Step-by-step explanation:

2.4 x 0.4 = ?
Again not smart

Answers

Answer:

o.96

Step-by-step explanation:

The answer is 0.96 : Explanation 2.

Math.nowplsansweribeglol

Answers

Answer:

B. 70

Step-by-step explanation:

The (-5) (7) (-2) just shows (-5) times 7 times (-2). And once you do that, you get postive 70.

don't add links please.

Answers

my guess would be a, i’m not sure… if i’m wrong please correct me!! :)
yes, the answer is a. correct me if i’m wrong though!!

I could not find the answer to this ANYWHERE, write the sentence as an equation. The total of 156 and C is the same as 314

Answers

Hello!

This equation is written like this:

156+c=314

Hope this helps!

~Just a cheerful teen

#CarryOnLearning

[tex]SilentNature :)[/tex]

Please help im offering 100 points and brainliest to the first real awnser!
A survey of a group of seventh graders and a group of teachers at a local middle school asked how many siblings they each have. The dot plots below show the results.
Students
A dot plot titled Students. A number line going from 0 to 9 labeled number of siblings. There are 2 dots above 0, 4 above 1, 7 above 2, 5 above 3, 2 above 4, and 0 above 5, 6, 7, 8, and 9.

Teachers
A dot plot titled Teachers. A number line going from 0 to 9 labeled Number of siblings. There is 1 dot above 0, 3 dots above 1, 2 above 2, 4 above 3, 5 above 4, 3 above 5, 1 above 6, 0 above 7, 1 above 8, and 0 above 9.

Based on the shape of the two dot plots, which statements correctly compare them? Select three choices.

Answers

Answer:

the answer is a: The mode for the students is 2 and the mode for the teachers is 4.

Hope this helps, have a nice day/night! :D

Answer:

The modle for the students is 2 and for the teachers is 4. A is your answer

Step-by-step explanation:

Help with slope assignment

Answers

Answer: C

Step-by-step explanation: Choice C moves in a diagonal straight line making it linear.

Answer: C

Step-by-step explanation:

I've done this before

What is the equation of the line that passes through (0, 3) and is perpendicular to y = = x + 5?
5

Answers

Answer:

D

Step-by-step explanation:

mperpendicular =-43

Answer:

The answer is A

Step-by-step explanation:

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