X is inversely proportional to y, and x = 18 when y = 4. Write an equation relating the two

Answers

Answer 1

Answer:

[tex]xy=72[/tex]

Step-by-step explanation:

If x is inversely porportionaly to y, then for some constant k,

[tex]x = \frac{k}{y}\\xy=k[/tex]

Since y is 4 when x = 18, k is equal to 4*18=72, so the equation is:

[tex]xy=72[/tex]


Related Questions

Can some pls help me with this!

Answers

THATS A LOT

Step-by-step explanation:

The experimental probability of not spinning a 1 is

Answers

Answer:

0.84 or 84%

Step-by-step explanation:

As per graph we have:

Number 1 = 8Number 2 = 6Number 3 = 9Number 4 = 11Number 5 = 9Number 6 = 7

Total number of spins:

8 + 6 + 9 + 11 + 9 + 7 = 50

Number of spins excluding a 1:

50 - 8 = 42

Required probability:

42/50 = 0.84 or 84%

Answer:

The experimental probability of not spinning a 1 is

Saludos

Consider the function: profit= 10(number of items sold)-100. If no items are sold
a. There is no profit
b. There is a loss of $100
c. There is a profit of $100
d. There is bot enough information to know

Answers

Answer:

B - there is a loss of $100

Step-by-step explanation:

Since nothing got sold, your equation becomes 10(0) - 100, or just -100, meaning $100 was lost.

Hopefully this helps- let me know if you have any questions!

How do you solve for 4-9i/-6i

Answers

Answer:

6i

Step-by-step explanation:

Type the correct answer in the box. Use the information from the image to complete the table then determine the total number of bacteria after the first hour(60 minutes).​

Answers

Answer:

Number of Bacteria, B(t)   2    4      8      16

Step-by-step explanation:

To find the B(t) values when t equals 0 through 3, look at the diagram and count the number of bacteria: when t is 0, B(t) is 2, when t is 1, B(t) is 4; when t is 2, B(t) is 8; and when t is 3, B(t) is 16.

Every second of video time equals 20 minutes of real time. So, one hour, or 60 minutes, of real time is 3 seconds of video time, which results in 16 bacteria.

Number of Bacteria, B(t)   2    4      8      16

The total number of bacteria after the first hour(60 minutes) is 16.

What is unitary method?

The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.

According to the question

He is taking screenshots of the video after every second of video time, with each second of video time correlating to 20 minutes of real time.

In the video, each bacteria cell splits into two cells with each passing second, as seen in the images from the video.

To find the B(t) values when t equals 0 through 3, look at the diagram and count the number of bacteria: when t is 0, B(t) is 2, when t is 1, B(t) is 4; when t is 2, B(t) is 8; and when t is 3, B(t) is 16.

Every second of video time equals 20 minutes of real time. So, one hour, or 60 minutes, of real time is 3 seconds of video time, which results in 16 bacteria.

Number of Bacteria, B(t)   2    4      8      16

Hence,

The total number of bacteria after the first hour(60 minutes) is 16.

Find out more information about unitary method here

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A triangle has a base of 15 and an area of 165. What is the height of the triangle?

Answers

Answer:

h = 22 units

Step-by-step explanation:

area = 1/2bh

165 = 1/2(15)h

15h = 330

h = 22 units

Answer: 33

Step-by-step explanation:

Someone please help me I’m struggling freshman in college. If the center of a ellipse is (5,-4) the major axis is horizontal and parallel to the x axis, and the distance from the center of the ellipse to its vertices is a=9 units, then the coordinates of the vertices are what?

Answers

Answer:

(14,-4)(-4,-4)

Step-by-step explanation:

5+9=14

5-9=-4

For each equation, find y when x=-3. Then find x when y = 2
1. y = 6x + 8

Answers

⬇ Hey, the answer is down below! :) ⬇

For y: x = -3

For y it stays the same.

For x: y = 2

For x it stays the same too.

For 1.): [tex]x = \frac{1}{6}y + \frac{-4}{3}[/tex]

Step-by-step explanation:

For y there is no step-by-step explanation unfortunately.

For x there isn't a step-by-step explanation too unfortunately.

⬇ For 1.) there is a step-by-step explanation! ⬇

For step 1 we should flip the equations.

6x + 8 = y

For step 2 we should add -8 to both sides.

6x + 8 + − 8 = y + −8

= 6x = y − 8

For step 3 we should divide both sides by 6.

[tex]\frac{6x}{6} = \frac{y - 8}{6}[/tex]

= x = [tex]x = \frac{1}{6}y + \frac{-4}{3}[/tex]

In result we should have [tex]x = \frac{1}{6}y + \frac{-4}{3}[/tex] as the answer!

do u know a site where i can practice squares​

Answers

Answer:

squares.com

Step-by-step explanation:

i dont really know what "square" you are talking about, but if it is this hope it helps!

https://www.mathsisfun.com/square-root.html

https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:quadratics-multiplying-factoring/x2f8bb11595b61c86:factor-difference-squares/e/factoring_difference_of_squares_2

https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:quadratics-multiplying-factoring/x2f8bb11595b61c86:factor-perfect-squares/e/factoring-perfect-squares

:)

Find the surface area of the cone.Use 3.14 for pi and round your answer to the nearest hundredth

Answers

Answer:

145.0 cm^2

Step-by-step explanation:

Given data

r= 4cm

l= 5cm

h=??

Apply Pythagoras theorem to find h we have

h^2= 4^2+5^2

h^2= 16+25

h^2= 41

h=√41

h= 6.4cm

Substitute into the formula for the surface area of cone

A=πr(r+√h^2+r^2)

A=3.14*4(4+√6.4^2+4^2)

A=12.56(4+√40.96+16)

A=12.56(4+√56.96)

A=12.56(4+7.547)

A=12.56*11.547

A=145.0 cm^2

Find the length of an arc of a circle whose central angle is 322o and radius is 4 km. Round your answer to the nearest tenth.

Answers

Answer:

The correct answer is = 22.4 km

Step-by-step explanation:

There are 1.6 kilometers in a mile find the distance in miles between two towns that are 24 kilometers apart

Answers

15 MILES

1 mile = 1.6 km

1 X
— • —
1.6 24

1.6x = 24

24/1.6 = 15 miles

Factor completely help plz

Answers

Answer:

the answer of this question is given in above picture, look

The measures of two angles of a triangle are 103° and 38°. Find the measure of the third angle in degrees.

Answers

103 + 38 = 141

180 - 141 = 39

The third angle is 39 degrees.

need help with this!

Answers

Answer:

a=11

Step-by-step explanation:

Let's solve your equation step-by-step.

√a+5=4

Solve Square Root.

√a+5=4

a+5=42(Square both sides)

a+5=16

a+5−5=16−5(Subtract 5 from both sides)

a=11

Check answers. (Plug them in to make sure they work.)

a=11(Works in original equation)

What is the interquartile range of this data set?

Key: 1|5 means 15

Answers

Answer:

10

Step-by-step explanation:

IQR= Q3-Q1

Q3=50

Q1=40

50-40=10

Median=43

Question
Use the distance formula to find the distance between the points (1, -7) and (9,6).
(Write your answer in exact form.)
Provide your answer below:
FEEDBACK

Answers

Answer:

[tex] \sqrt{233} [/tex]

Step-by-step explanation:

Given:

(1, -7) and (9, 6)

Required:

Distance between the two points

Solution:

Distance formula is given as [tex] d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} [/tex]

Let,

[tex] (1, -7) = (x_1, y_1) [/tex]

[tex] (9, 6) = (x_2, y_2) [/tex]

Plug in the values

Distance between both points = [tex] d = \sqrt{(9 - 1)^2 + (6 -(-7))^2} [/tex]

[tex] d = \sqrt{(8)^2 + (13)^2} [/tex]

[tex] d = \sqrt{64 + 169} [/tex]

[tex] d = \sqrt{233} [/tex]

The perimeter of a rectangle is 96 feet, and the width is 22 feet. What is the length
of the rectangle?

Answers

Answer:

26

Step-by-step explanation:

22+22= 44

96-44=52

52 devided by 2=26

Hope that helps:)

Math work help needed!

Answers

I am so sorry i cant help but good luck

Answer:

D.77

Step-by-step explanation:

I forgot the technical name, but basically the measure of the angle is half of the arc.

For example 90 + 64 is 154, so half that is 77.

Good Luck!

What is the distance between (-4, 8) and (12, 8) on the coordinate plane? A 16 units B 8 units C 0 units D 4 units

Answers

Answer:

16 units

Step-by-step explanation:

We need to find the distance between (-4, 8) and (12, 8) on the coordinate plane.

We know that the distance between two points on the coordinate plane is given by :

[tex]D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

Put x₁ = -4, x₂ = 12, y₁ = 8 and y₂ = 8

So,

[tex]D=\sqrt{(12-(-4))^2+(8-8)^2}\\\\=16\ units[/tex]

So, the distance between the two points is equal to 16 units.

Para el siguiente circuito calcula la intensidad si el voltaje es de 15V y su resistencia total, “es necesario enviar el procedimiento”.

ayuda :(

Answers

Answer:

que es eso

Step-by-step explanation:

Dilations
If ABCD is dilated by a factor of Į, the
coordinate of D' would be

Answers

9514 1404 393

Answer:

  D'(2, -1)

Step-by-step explanation:

Dilation about the origin by factor k multiplies each coordinate by that factor:

  (x, y) ⇒ (kx, ky)

For k = 1/3, this is ...

  (x, y) ⇒ (x/3, y/3)

  D(6, -3) ⇒ D'(6/3, -3/3) = D'(2, -1)

Get it right get Brainlyist

Rectangle or prism has dimensions shown in the diagram what is the total surface area of the prism in square inches

Answers

Answer:

237.5

Step-by-step explanation:

Write the slope-intercept form of an equation of the line that passes through the given point and is perpendicular to the graph of the equation. (-8,5) y = -4x +2

Answers

Answer:

y = 1/4x + 7

Step-by-step explanation:

A perpendicular line will have an opposite reciprocal slope, so the slope will be 1/4

Plug in the given point and slope into y = mx + b, then solve for b

y = mx + b

5 = 1/4(-8) + b

5 = -2 + b

7 = b

Plug in b and the slope into y = mx + b

y = 1/4x + 7

So, the equation of the line is y = 1/4x + 7

What is the surface area of the square pyramid? (1 point) 19 ft 19ft 12ft

Answers

Answer:

im pretty sure it's d

Step-by-step explanation:

because i put that and i got a good grade

Find the gradients of lines A and B.

Answers

Answer:

GRADIENT:

A: 4

B: -2

Step-by-step explanation:

rise/run for line A= 4/1 = 4

rise/run for line B= -2/1

Answer:

[tex]gradient = \frac{y1 - y2}{x1 - x2} [/tex]

chose two co-ordinate points (x1, y1), (x2, y2) that lie on each of the lines and sub them into the above equation

A gear with a diameter of 12.0 inches makes 35 revolutions every three minutes. Find the linear and angular velocities of a point on the outer edge of the gear. Give your answers in both exact and approximate forms.

Answers

Answer:

Angular velocity: [tex]\omega = \frac{7\pi}{18} \,\frac{rad}{s}[/tex] ([tex]1.222\,\frac{rad}{s}[/tex])

Linear velocity: [tex]v = \frac{14\pi}{3}\,\frac{m}{s}[/tex] ([tex]14.661\,\frac{m}{s}[/tex])

Step-by-step explanation:

The gear experiments a pure rotation with axis passing through its center, the angular ([tex]\omega[/tex]), in radians per second, and linear velocities ([tex]v[/tex]), in inches per second, of a point on the outer edge of the element are, respectively:

[tex]\omega = \frac{2\pi}{60}\cdot \dot n[/tex] (1)

[tex]v = R\cdot \omega[/tex] (2)

Where:

[tex]\dot n[/tex] - Rotation rate, in revolutions per minute.

[tex]R[/tex] - Radius of the gear, in inches.

If we know that [tex]\dot n = \frac{35}{3}\,\frac{rev}{min}[/tex] and [tex]R = 12\,in[/tex], then the linear and angular velocities of the gear are, respectively:

[tex]\omega = \frac{2\pi}{60}\cdot \dot n[/tex]

[tex]\omega = \frac{7\pi}{18} \,\frac{rad}{s}[/tex] ([tex]1.222\,\frac{rad}{s}[/tex])

[tex]v = R\cdot \omega[/tex]

[tex]v = \frac{14\pi}{3}\,\frac{m}{s}[/tex] ([tex]14.661\,\frac{m}{s}[/tex])

please answer illgive BRAINLIEST

Answers

Answer:

The answer is C I just took that test and Aced trust.

brainliest?

Step-by-step explanation:

Can someone pls help me out

Answers

Answer:

50

Step-by-step explanation:

∠J=2×∠L=50

When two angles are subtended by the same arc, the angle at the centre of a circle is twice the angle at the circumference

Answer:

it would also be 25°

Step-by-step explanation:

if you fold it in half then it is symmetrical.

A man is three times as old as his daughter. If the difference in their ages is 36 years, find the ages of the father and daughter.

Answers

Answer:

man's age = 54

daughter's age = 18

Step-by-step explanation:

x = man's age

y = daughters age

x = 3y

x - y = 36

substitute for x:

3y -y = 36

2y = 36

y = 18

x = 54

If a man has a daughter who is three times his age. The father and daughter will be 54 and 18, respectively, assuming their ages are 36 years distant.

What is an equation?

Equations are statements that affirm the equivalence of two expressions that are joined by the equals symbol "=". An equal sign ("=") links two expressions together to form an equation. The two expressions on each side of the equals sign are referred to as the "left-hand side" and "right-hand side" of the equation.

It is given that, A man is three times as old as his daughter. If the difference in their ages is 36 years,

We have to find the ages of the father and daughter.

Suppose the age of the father and daughter will be x and y respectively.

If the man is three times as old as his daughter,

x = 3y

If the difference in their ages is 36 years

x - y = 36

Put the value of x as,

3y -y = 36

2y = 36

y = 18

x = 54

Thus, if a man has a daughter who is three times his age. The father and daughter will be 54 and 18, respectively, assuming their ages are 36 years distant.

.Learn more about the equation here,

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