Consider the equality xy k. Write the following inverse proportion: y is inversely proportional to x. When y = 12, x=5.​

Answers

Answer 1

Answer:

[tex]y=\dfrac {60} {x}[/tex]   or   [tex]xy=60[/tex]   (depending on your teacher's format preference)

Step-by-step explanation:

Proportionality background

Proportionality is sometimes called "variation".   (ex. " 'y' varies inversely as 'x' ")

There are two main types of proportionality/variation:

DirectInverse.

Every proportionality, regardless of whether it is direct or inverse, will have a constant of proportionality (I'm going to call it "k").

Below are several different examples of both types of proportionality, and how they might be stated in words:

[tex]y=kx[/tex]      y is directly proportional to x[tex]y=kx^2[/tex]     y is directly proportional to x squared[tex]y=kx^3[/tex]     y is directly proportional to x cubed[tex]y=k\sqrt{x}}[/tex]   y is directly proportional to the square root of x[tex]y=\dfrac {k} {x}[/tex]   y is inversely proportional to x[tex]y=\dfrac {k} {x^2}[/tex]   y is inversely proportional to x squared

From these examples, we see that two things:

things that are directly proportional -- the thing is multiplied to the constant of proportionality "k"things that are inversely proportional -- the thing is divided from the constant of proportionality "k".

Looking at our question

In our question, y is inversely proportional to x, so the equation we're looking at is the following [tex]y=\dfrac {k} {x}[/tex].

It isn't yet clear what the constant of proportionality "k" is for this situation, but we are given enough information to solve for it:  "When y=12, x=5."

We can substitute this known relationship pair, and find the "k" that relates this pair of numbers:

Solving for k, and finding the general equation

General Inverse variation equation...

[tex]y=\dfrac {k} {x}[/tex]

Substituting known values...

[tex](12)=\dfrac {k} {(5)}[/tex]

Multiplying both sides by 5...

[tex](12)*5= \left ( \dfrac {k} {5} \right ) *5[/tex]

Simplifying/arithmetic...

[tex]60=k[/tex]

So, for our situation, k=60.  So the inverse proportionality relationship equation for this situation is [tex]y=\dfrac {60} {x}[/tex].

The way your question is phrased, they may prefer the form: [tex]xy=60[/tex]


Related Questions

If m ∠4 = m ∠5, then r||s. Summarize the postulate or theorem that makes this a true statement.
can someone please explain how to solve this

Answers

The statement, m∠4 = m∠5, then then r||s is true based on the converse of corresponding angles theorem.

What is the Converse of Corresponding Angles Theorem?

Based on the converse of corresponding angles theorem, if two corresponding angles, angles 4 and 5 are congruent or equal to each other, then the lines on which they lie on, lines r and s are congruent.

Therefore, based on the converse of corresponding angles theorem, m∠4 = m∠5, then then r||s.

Learn more about the converse of corresponding angles theorem on:

https://brainly.com/question/7066290

#SPJ1

Members of the band sold juice and popcorn at a college football game to raise money for an
upcoming trip. Each juice bottle sold costs $2.50, and each container of popcorn sold costs
$1.25.

a. write an equation to represent how much money was made
b. be sure to specify what the variables represent.

Answers

Answer:

2.50x+1.25y=z

Step-by-step explanation:

Let the number of juice bottles = x

And the number of containers of popcorns=y

And the total number of juice bottles and containers of popcorns=z

Total number of juice bottles=x times $2.50

Total number of containers of popcorn= y times $ 1.25

equation; 2.50x+1.25y=z

HELP QUICKKK What is the difference between –4 and 6?
–10
–2
2
10

Answers

Answer:

10

Step-by-step explanation:

Plugin your answer: -4 + 10 = 6

Answer:

10

Step-by-step explanation:

(−7)^-2 and more letters cause needed

Answers

Answer:

1/49.

Step-by-step explanation:

(−7)^-2

=  1 /(- 7)^2

= 1/49.

Solve each triangle – find any missing side and angle measures. Round answers to the nearest tenth.

Answers

Step-by-step explanation:

Write an equation to model this proportional relationship, where x represents the length of the rectangle and y represents the width of the rectangle.

Answers

When Area of rectangle is constant, then the length x is inversely proportional to the width y of the rectangle.

[tex]x\propto \frac{1}{y} [/tex]

We know that the area of a rectangle is given by the product of the length and width of the rectangle.

Area = Length*Width

In this given problem,

The length of the rerectanglctangle is represented by x

and the width of the rectangle is represented by y

If the area of the rectangle is represented by A now.

So by the formula,

A = x*y

When A is constant then,

x = A/y

[tex]\therefore x \propto \frac{1}{y}[/tex]

So from the above calculation we can conclude that about relation between length and width that,

"When Area of rectangle is constant, then the length x is inversely proportional to the width y of the rectangle."

Learn more about Area here -

https://brainly.com/question/25292087

#SPJ10


.
help me please gang

Answers

Answer:

Not similar

Step-by-step explanation:

There is only one side and one angle, which insufficient to prove triangle similarity.

Missing value of why worth 20 points pls help

Answers

A triangle is a three-edged polygon with three vertices. It is a fundamental form in geometry. The value of x, y and z is 90°, 53°, and 100°, respectively.

What is a triangle?

A triangle is a three-edged polygon with three vertices. It is a fundamental form in geometry. The sum of all the angles of a triangle is always equal to 180°.

In ΔABD is made on the diameter of the circle, therefore, the measure of ∠BAD = 90°. Therefore,

x° = 90°

In ΔAOD, the measure of ∠AOD is 74°, also, the triangle is an isosceles triangle with OA and OD of equal length. Therefore, the sum of the angles can be written as,

y° + y° + 74° = 180°

2y° = 106°

y = 53°

Similarly, ΔBOC is an isosceles triangle with OB and OC having an equal length. Therefore, ∠OBC=∠OCB. Also, the sum of all the angles can be written as,

∠BOC + ∠OBC + ∠OCB = 180°

∠BOC + 40° + 40° = 180°

∠BOC = 100°

Hence, the value of x, y and z is 90°, 53°, and 100°, respectively.

Learn more about Triangle:

https://brainly.com/question/2773823

#SPJ1

Given that y = 12 cm and 0 = 45°, work
out a rounded to 1 DP.

The diagram is not drawn accurately.
X
cm

Answers

The value of x is 8.5 cm

How to solve for x?

The complete question is in the image

The given parameters are:

y = 12 cm

[tex]\theta = 45^o[/tex]

The value of x is calculated using the following sine ratio

[tex]\sin(\theta) = \frac xy[/tex]

This gives

[tex]\sin(45^o) = \frac x{12}[/tex]

Multiply by 12

[tex]x = 12 * \sin(45^o)[/tex]

Evaluate

x = 8.5

Hence, the value of x is 8.5 cm

Read more about right triangles at:

https://brainly.com/question/2437195

#SPJ1

I NEED HELP QUICK!!!

Triangle ABC is transformed to triangle A′B′C′, as shown below:

A coordinate grid is shown from negative 4 to 0 to 4 on both x- and y-axes. A triangle ABC has A at ordered pair negative 1, 3, B at ordered pair 0, 1, C at ordered pair negative 3, 0. A triangle A prime B prime C prime has A prime at ordered pair negative 1, negative 3, B prime at ordered pair 0, negative 1, C prime at ordered pair negative 3, 0.

Which equation shows the correct relationship between the measures of the angles of the two triangles?

The measure of angle CAB = The measure of angle C prime B prime A prime
The measure of angle BCA = The measure of angle A prime B prime C
The measure of angle CAB = The measure of angle C prime A prime B prime
The measure of angle BCA = The measure of angle C prime A prime B prime

Answers

The equation that shows the correct relationship between the measures of the angles of the two triangles is;

Option D: The measure of angle BCA = The measure of angle C prime A prime B prime

How to Interpret Objects Transformation?

We are told that Triangle ABC is transformed to triangle A′B′C′.

Now,  the triangle ABC and A'B'C' are similar triangles and we know that similar triangles angles are congruent. Thus;

From the given coordinates, we can say that;

∠BAC = ∠B'A'C'

∠ABC = ∠A'B'C'

∠ACB = ∠A'C'B'

Thus, the equation that shows the correct relationship between the measures of the angles of the two triangles is;

The measure of angle BCA = The measure of angle C prime A prime B prime

Read more about Objects Transformation at; https://brainly.com/question/2512124

#SPJ1

number 8. use the Steps in the construction to determine which statement is true

Answers

Answer:

choice C

Step-by-step explanation:

The circle is circumscribed because circles drawn on the outside is known as circumscription. The circle is clearly outside touching the three vertices of the triangle.

PLEASE HELPPPP!
Susan's calculator has a key that replaces the number displayed with its cube. If a² is displayed, how many times must Susan press the " cubing" key to display a number that is greater than 10?

Please explain it step-by-step! Also, I will give you a brainlist!!

Answers

Answer:

10

Step-by-step explanation:

This is because you would have to start with 109 = 23x

then solve it using logarithms

Then once you get the x value, it becomes

X>_10__(whatever number you found)

The following figure shows a square-based pyramid.
5
6
Which expression represents the surface area of the pyramid?
Choose 1 answer:

Answers

The expression that shows the surface area of the pyramid is (2 * 2) + 4(0.5 * 2 * 3)

What is an equation?

An equation is an expression that shows the relationship between two or more variables and numbers.

The surface area of  pyramid = sum of individual area of the surface

Surface area = (2 * 2) + 4(0.5 * 2 * 3)

The expression that shows the surface area of the pyramid is (2 * 2) + 4(0.5 * 2 * 3)

Find out more on equation at: https://brainly.com/question/13763238

#SPJ1

ILL MARK BRAINLIEST HELP PLS I NEED THE ANSWER TO 9 and 10

Answers

Answer:

28. Y=1x+c

29. -2/3x+c

Hope it helps :)

The black graph is the graph of y= f(x). Choose the equation for the red graph
a. y=f(x+3)
b. y=f(x-3)
c. y+3=f(x)
d. y-3=f(x)

Answers

Answer:

[tex]D[/tex]

Step-by-step explanation:

Notice that the red graph does not globally differ from the black graph: it would have been approximately the same one unless it had been displaced by 3 units up. Therefore, it was only the ordinate axis that underwent our change: [tex]y - 3 = f(x) \Leftrightarrow y = f(x) + 3[/tex].

Answer:

C

Step-by-step explanation:

Please help ill give whoever answers the best the brainliest answer

Answers

the third chart i think

A room has a length of 8 m. A scale diagram is drawn of the room. In the diagram, the room has a length of 1 cm. What is the scale of the diagram? Give your answer as a ratio in the form 1 : k , where k is an integer.

Answers

The scale of the diagram as described in the task content is; 1: 8 where k= 8.

What is the scale of the diagram?

It follows from the task content that the original length of the room in discuss is 8cm. It therefore follows that the length of the room in the scale diagram is 1cm. On this note, the scale of the diagram in discuss is; 1 : 8 as 1cm on the diagram corresponds to 8cm actual length.

Read more on scale of diagrams;

https://brainly.com/question/24255624

#SPJ1

Can someone pls help me?

Answers

Answer:

[tex] \frac{8}{24} [/tex]

Step-by-step explanation:

If Adam's family uses 8lb of apples to make pie. We know that 3 x 8 = 24, so it's probably approximately 3 out of 18.

A motorcycle traveling at 70 miles per hour overtakes a car traveling at 40 miles per hour that had a three-hour head start. How far from the starting point are the two vehicles

Answers

A motorcycle traveling at 70 miles per hour overtakes a car traveling at 40 miles per hour that had a three-hour head start. How far from the starting point are the two vehicles.

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

The car is 120 miles away when the motorcycle starts.

The bike gains on the car at 30 mph (70-40).

It takes 4 hours for the bike to close the gap (120/30).

In 4 hours, the bike and the car are 280 miles from the starting point.

---------

4*70 = 280

7*40 = 280

Since Distance = Speed x Time, and in this case, the distances are equal, we, therefore, have: 70T = 40(T + 3)

70T = 40T + 120

30T = 120

T=4, which makes the distance that both vehicles traveled, highlight_green280miles, calculated as (70 * 4), or (40 * 7).

It also means that the motorcycle took 4 hours to travel 280 miles, and the car took 3 hours more, or 7 hours to travel the same distance.

Learn more about Distance:

https://brainly.com/question/12356025

#SPJ4

Let $m$ be a positive integer such that $m$ has exactly 5 positive divisors. How many distinct prime factors does $m$ have

Answers

If m has exactly 5 positive divisors then there can only be one prime factor.

According to statement

m has exactly 5 positive divisors AND

Let A^p,B^q,.... are the possible factors of integer m then

assume that p and q ≥ 1.

then the number of possible divisors cannot be 5 because there are no two integers  p, q ≥ 1, such that (p +1)(q + 1) = 5

So, If m has exactly 5 positive divisors then there can only be one prime factor.

Learn more about FACTORIZATION here https://brainly.com/question/11434122

#SPJ4

look at image............

Answers

Answer:

f(x)=2x-3

Step-by-step explanation:

cause fir example if you put x=2 the y became 1.

The following table shows a proportional relationship between jjj and mmm.
jjj mmm
444 333
121212 999
202020 151515
Write an equation to describe the relationship between jjj and mmm.

Answers

Answer:

The equation representing the proportional relationship between j and m is m = 3j/4 .

Step-by-step explanation:

Writing an Equation to Represent a Proportional Relationship

What is proportional relationship?

A proportional relationship between two quantities is when the two quantities vary directly with one and other. Meaning if one item is doubled, the other item is also doubled.

Going back to the given problem above, we have the table showing the proportional relationship between j and m.

j | 4 | 12 | 20 |

m | 3 | 9 | 15 |

Solution:

Step #1

The proportional relationship can be written as:

m/j = ¾ = ‌9⁄12‌ = ‌15⁄20‌ = ¾

Step #2

So, the equation representing this proportional relationship is:

m = ¾ × j/1 = 3j/4

Final Answer:

The equation representing the proportional relationship between j and m is m = 3j/4 .

Step-by-step explanation:

7. A student on the cross-country team runs 30 minutes a day as a part of her training.
Write an equation to describe the relationship between the distance she runs in miles, , and her running speed, in miles per hour, when she runs:
a. at a constant speed of 4 miles per hour for the entire 30 minutes.

Answers

The relationship between the distance she runs in miles, , and her running speed is Distance = speed * time

What is an equation?

An equation is an expression that shows the relationship between two or more numbers and variables.

The distance travelled in 30 minutes is:

Distance = speed * time = 4 mph * 0.5 h = 2 miles

The relationship between the distance she runs in miles, , and her running speed is Distance = speed * time

Find out more on equation at: https://brainly.com/question/2972832

#SPJ1

Given that
x
= 8 cm and
y
= 23 cm, work out

BCA rounded to 3 SF.

Answers

The value of the angle ∠BCA when approximated to 3 significant figures is;  20.4°

How to use Trigonometric Ratios?

From the attached image of the triangle ABC showing the side lengths x and y, we can see clearly that it is a right angle triangle.

Now, since we want to find the value of the angle ∠BCA, then it means we have to use trigonometric ratio to get;

x/y = sin BCA

Plugging in the relevant values gives us;

8/23 = sin BCA

∠BCA = sin⁻¹(8/23)

∠BCA = 20.355

Approximating to 3 significant figures gives us;

∠BCA = 20.4°

Read more about Trigonometric Ratios at; https://brainly.com/question/13276558

#SPJ1

Please help! I can't figure this out, i'll give a brainliest

Answers

The linear equation that best fits the data is: y = 10x + 15.

How to Write the Linear Equation of a Data?

First, find the slope/unit rate (m) and the y-intercept/starting value, then substitute the values into y = mx + b.

Using two points on the graph, (1, 25) and (2, 35), find the slope (m):

Slope (m) = (35 - 25)/(2 - 1)

Slope (m) = 10/1

Slope (m) = 10

Substitute (x, y) = (1, 25) and m = 10 into y = mx + b to find b

25 = 10(1) + b

25 - 10 = b

b = 15

Substitute m = 10 and b = 15 into y = mx + b

y = 10x + 15

Learn more about the linear equation on:

https://brainly.com/question/15602982

#SPJ1

Which expressions represent exponential decay? Check all that apply.

900(0.05)t
700(0.9)x
53(1.75)(0.3)x
90(1.2)t
300(2.4)(1.2)y
2x2 + 9
18 – 3y

Answers

The expressions that represent exponential decay are 900(0.05)^t, 700(0.9)^x and  53(1.75)(0.3)^x

How to determine the expressions?

An exponential function is represented as:

y = ab^x

The above means that options (f) and (g) are not exponential functions

When b is less than 1, then the function is an exponential decay.

From the list of options, we have:

900(0.05)^t => b = 0.05

700(0.9)^x => b = 0.9

53(1.75)(0.3)^x => b = 0.3

Hence, the expressions that represent exponential decay are 900(0.05)^t, 700(0.9)^x and  53(1.75)(0.3)^x

Read more about exponential decay at:

https://brainly.com/question/14355665

#SPJ1

Pls help me with the answer , ty

Answers

Using it's concept, the equivalent expression for the perimeter of the figure is:

2 + 3x2 + 4x2 + 5x2 + 8

What is the perimeter of a figure?

The perimeter of a figure is given by the total length of it's boundary.

Hence, for the figure given in this problem, the perimeter is:

2 + 3 + 3 + 4 + 4 + 5 + 8 + 5

2 + 3x2 + 4x2 + 5x2 + 8

More can be learned about the perimeter of a figure at https://brainly.com/question/26134384

#SPJ1

Which of the following situations involve opposite quantities combining to make 0?

·Krista has a new piggy bank. She adds 3 quarters on Tuesday, and then adds another 3 quarters on Thursday.

·Carlyns opens a new checking account with $30. His first purchase, made with his new debit card, totals $28.

·Bekzod makes 1.5 liters of lemonade and drinks it all during the afternoon.

·Daisy is writing a novel. She wrote 4 new pages to finish Chapter 1. When she reviews Chapter 1, she discards these 4 pages and an additional 4 pages.

Answers

Bekzod makes 1.5 liters of lemonade and drinks it all during the afternoon. This is the only one of the examples given that would ultimately equal zero.

Please help ASAP
Please help ASAP
Please help ASAP
Please help ASAP

Answers

Substituting L = 7.29,

[tex]t = 2.01 \sqrt{7.29} \approx \boxed {5.4}[/tex]

CAN ANYONE HELP PLSS

Answers

Answer:

CD = 13

Step-by-step explanation:

since Δ ABD and Δ CBD are congruent , then corresponding sides are congruent, so

CD = DA = 13

Answer:

13

Step-by-step explanation:

We know that if two triangles are congruent, the corresponding element of those are also equal.

Given that,

ABD Δ ≡ CBD Δ

Therefore, the corresponding elements are also equal.

AD = CD

AD = 13 units

CD = 13 units

Other Questions
If charcoal and sugar were present in crude benzoic acid, would recrystallization from water be a good method of purification? Why? Explain. : Describe three Characteris of Evergreen Forest A trader sold an article for N150 andmade a profit of 20%. What was thecost price of the article? Which sentence contains a polysyndeton?"I wandered down the packed hallways of mygrandfather's library.""Perhaps he'd collected them on his travels to Italy orCanada or Prague or Vietnam or Egypt or Iran.""The volumes seemed to invite me to come closer.""There I found books sorted by color, arranged fromsmallest to largest, glimmering in the light." Use the concepts on which maxwells equations are based to explain why a compass needle is deflected when the compass is brought near a wire that is carrying an electric current. A company should select the capital structure that Blank______. Multiple choice question. results in the lowest taxes maximizes the company's value has the lowest leverage results in the lowest debt What is the central idea of the first paragraph of The Dark Game?O The Civil War was a short conflict between the North and the South. The Civil War lasted longer than people at first expected it to last.O During the Civil War, there were many casualties on both sides. During the Civil War, Fort Sumter was overtaken by the Confederacy. Based on the text, how did Lorraine Hansberrys life influence her work as a playwright? -She wrote about the struggles her father faced in real estate. -She wrote about what it was like to live in a white neighborhood in the 1950s. -She wrote about how segregation made life difficult for many African Americans. -She wrote about the first African American justice to serve on the Supreme Court. 3. What happens as a population approaches carrying capacity?a. Density-Dependent factors have a greater effect.b. Density-Independent factors have a smaller effect.c. Density-Independent factors have a greater effect.d. Density-Dependent factors have a smaller effect. The phrase "Man's best friend" is an example ofa. Literal speechb. ironyc. Figurative speechd. Paradox Which number is equal to 906,060? 9.0606 times. 105 9.06 times. 105 9.06 times. 105 9.0606 times. 105 PLEASE HELP ! Determine f of the quantity 2 plus h end quantity minus f of 2 all over h if f (x) = 5x 6. 4 4h 5 5h Which of the following shows that the two composite figures cover the same area? what is the rule for the following geometric sequence? 64, -32,16,-8 Part ABefore you begin creating your presentation, use this table to plan out which events or legislation you will include in your presentation showing modern immigration trends. Reflect on the process of researching and analyzing immigration policy and trends and creating a presentation. How did this process increase your understanding of immigration policy and current immigration issues? What do you think the future holds for immigration trends? Suppose that poaching reduces the population of an endangered animal by 6% per year. Further suppose that when the population of this animal falls below 20, its extinction is inevitable (owing to the lack of reproductive options without severe in-breeding). If the current population of the animal is 1500, when will it face extinction? Comment on the validity of this exponential model. When you "Rate," or analyze, the consequences of your decisions, HELP can assist you with which of the following? Given the equilibrium for a general reaction a+b c+d explain what happens to the reactants and products from time 0 until the time at which the reaction reaches equilibrium The CEO of a multinational company finds that profits are drastically decreasing. He realizes that employees need to be immediately made aware of the challenges faces the company, and he wants them to know he is personally concerned. The company has several branches in various parts of the world. What is the most appropriate media for the CEO to use What is the tangentratio of angle C ?