Suppose that y is inversely proportional to the 4th power of x, and that y=15 when x=5. What is y when x=7? Round your answer to two decimal places if necessary.

Answers

Answer 1

Answer:

y = 3.91 when x =7

Step-by-step explanation:

y = k / x⁴

Where,

k = constant of proportionality

y=15 when x=5

y = k / x⁴

15 = k / 5⁴

Cross product

15 × 5⁴ = k

15 × 625 = k

9,375 = k

What is y when x=7?

y = k / x⁴

= 9,375 / 7⁴

= 9,375 / 2401

= 3.9046230737192

Approximately

y = 3.91


Related Questions

f(x)5x + 4
Find f(6)

Answers

[tex]\sf{Hello!}[/tex]

[tex]f(x) = 5x + 4[/tex]

[tex]f(6) = ---- [/tex]

[tex]f(6) = 5(6) + 4[/tex]

[tex]f(6) = 30 + 4[/tex]

[tex]f(6) = 34[/tex]

Have a nice day!

when it says f(6), it just means to plug in 6 for x so ... 5(6)+4= 28

Ans: 28

Find the value of y.

Answers

Answer:

y = -1

Step-by-step explanation:

It´s an equilateral triangle

then:

2y + 6 = 4

2y = 4 - 6

2y = -2

y = -2/2

y = -1

Check:

2*-1  + 6 = 4

-2 + 6 = 4

An ocean sunfish was swimming 125 meters below the ocean's surface. While hunting for jellyfish, it swam down another 115 meters.
What is the position of the sunfish now relative to the ocean's surface?

Answers

Answer:240

Step-by-step explanation:

125+115=240

Answer:

-240

Step-by-step explanation:

its right.

△DEF≅△LMN
What is the value of x?
What is the value of y?
What is the measure of angle L?
What is the measure segment EF?

Answers

Answer:

If you can pin the picture of the triangles to the comments here I would be very happy to help you!

If you drive 162 miles and use 9 gallons of gas, what is your rate?
Select an answer

Answers

Divide 162 by 9 so then yo get your answer

What would be the height of 1000 Canadian Dimes?

Answers

A 48 inch TV hdhsbsbdj

The height of 100 Canadian dimes is 1220 millimeter.

What is a expression? What is a mathematical equation? What is Equation Modelling?

A mathematical expression is made up of terms (constants and variables) separated by mathematical operators. A mathematical equation is used to equate two expressions. Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem.

We have 1000 Canadian dimes.

Assume that the height of 100 Canadian dimes is [x] mm. Then, we can write -

[x] = 1000 x 1.22

[x] = 1220 mm

Therefore, the height of 100 Canadian dimes is 1220 millimeter.

To solve more questions on Equations, Equation Modelling and Expressions visit the link below -

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Spectrum word problems Grade 8 HELP

Answers

Answer:

add all the numbers up in 1 2 3 4 and 5

Step-by-step explanation:

Answer:3 4 5 7

Step-by-step explanation:

The shortest side of a right triangle is 14 inches long. The difference between the lengths of the other two sides is 2 inches. Find the missing sides. Use exact values.

Answers

Answer:

The missing sides are 50 inches and 48 inches long.

Step-by-step explanation:

Let the lengths of the other two sides be x inches and y inches

And let x represent the length of the longest side.

From the question,

The difference between the lengths of the other two sides is 2 inches. That is,

x - y = 2 ...... (1)

The three sides of the right triangle are x, y, and 14 inches long.

From the Pythagorean theorem, " In a right triangle, the square of the longest side equals sum of squares of the other two sides"

Here, the longest side is x

Hence, we can write that

x² = y² + 14²

∴ x² = y² + 196 ...... (2)

Now, we have two equations, we can then solve simultaneously.

From equation (1)

x - y = 2

∴ x = y + 2 ...... (3)

Put this into equation (2)

x² = y² + 196

(y+2)² = y² + 196

y² + 4y + 4 = y² + 196

4y + 4 = 196

4y = 196 - 4

4y = 192

y = 192/4

y = 48

To determine x, we will substitute the value of y into equation (3)

x = y + 2

∴ x = 48 + 2

x = 50

Hence, x = 50 and y = 48

Since the lengths of the other two sides are x inches and y inches,

Hence, the missing sides are 50 inches and 48 inches.

Can someone help me with problems in the image?

Answers

Answer:

13.m<9=110  14.m<4=115    15.m<10=70   16.m<11=70   17.m<8=65    18.m<5=65  19.m<3=65      20.m<14=110

Step-by-step explanation:

What integer represents a gain of 2 pounds?

Answers

Answer:

+2

Step-by-step explanation:

A number rounded to the nearest tenth is 0.6. which could be the original number before rounding?
Answers:
0.68
0.52
0.57
0.69

Answers

Answer:

3rd choice 0.57

Step-by-step explanation:

when rounding to the tenth place we look at the hundreds place and when it greater than or at 5 we round up and when it's less than 5 we round down.

1) explanation:0.7 when rounding to the tenth place. since the 8 was greater than 5 we round-up and get 0.70.

2)explanation: 0.5 when rounded to the tenth place the hundreds place which is 2 is less the 5 so we round down and get 0.50.

3)explanation: 0.6 when rounded its hundreds place is greater than 5 so we round up and get 0.60.

4)explanation: 0.7 when rounding to the tenth place. since the 9 was greater than 5 we round-up and get 0.70.

hopes this help you

Kiran has 10 1/2 feet of lumber and wants to make a bookshelfKiran needs two side panels that are each 5 2/3 feet. How much more lumber does Kiran need in order to make the side panels?

Answers

Total height of lumber, H = 10 1/2 feet = 21/2 feet .

Height of side panel, h = 5 2/3 feet = 17/3 feet .

Now,

Extra lumber required, L = 2 × Height of side panel - Total height of lumber

[tex]L=[2\times (\dfrac{17}{3})]-\dfrac{21}{2}\\\\L = \dfrac{5}{6}\ feet[/tex]

Therefore, extra lumber required is [tex]\dfrac{5}{6}[/tex] feet.

Hence, this is the required solution.

Jada has time on the weekends to earn some money. A local bookstore is looking for someone to help sort books and will pay $12.20 an hour. To get to and from the bookstore on a work day, however, Jada would have to spend $7.15 on bus fare.
how would I write an equation for this? use e for her earnings and h for hours worked

Answers

Y= hx + ex ) x is the number of days jada has worked

How many hours and minutes is this?

Answers

2 hours and 15 minutes.

i got the answer by 30 x 3/8 portions (bc 15 people eating 2 portions each = 30 ykyk) I got 90/8 = 11 1/4, if it takes 12 min per pound, 12 x 11 1/4 = 135. 135 is equivalent to 2 hours and 15 minutes !

Which number is greater .
35 or 61

Answers

Answer: 61

Explanation:

Answer:

61

Step-by-step explanation:

Because you need to use the Greater than or less than shortcut

(-55 +94i) + (13 – 12i) =

Express your answer in the form (a + bi).

Answers

Answer:

(−55+94i) + (13−12i) = (−42+82i)

Step-by-step explanation:

The sum of the two complex numbers, (a+bi) and (c+di), is ((a+c) + (b+d)i)

( -  55 +  94i) + ( 13 -  12i) =

 ( -  42 +  82i)  

(BRAINLYEST TO RIGHT ANSWER) pls i need help!

Answers

Answer:

What is the question?

Step-by-step explanation:

Answer:

where is the question

Step-by-step explanation:

[EASY] What's the slope of the line?? PLEASE HELP

Answers

Answer:

-3/1

Step-by-step explanation:

you go down 3, and to the right one. slope is rise over run so -3 over 1

Si a un numero "X" le sumo 3 y al resultado lo multiplico por 2, me da 14 ¿cual es ese numero?

Answers

4 porque si le sumas eso al 3 da a 7 y por 2 da a 14

NATURE The frequency of a male cricket's chirp is related to the outdoor temperature. The
relationship is expressed by the graph, where y is the temperature in degrees Fahrenheit and x is the
number of chirps the cricket makes in 14 seconds. Write an equation for the line in point-slope form.



PLEASE ANSWER I WILL DO ANYTHING I NEED THIS ASAP ITS DUE IN 3 MINUTES

above is the graph needed to answer this question

Answers

y−60=1(x−20)  ,

y−40=x  ,

y−50=1(x−10)  ,

y−45=1(x−5)  ,

or

y−55=1(x−15)

Step-by-step explanation: I have no idea

The equation for the graph written in point - slope form may be expressed thus y-60 = 1(x - 20)

The general form of a point - slope expression is :

y - y1 = m(x - x1) m = slope

Taking the pair of points (20, 60) :

x1 = 20 ; y1 = 60

Slope = Rise / Run

Rise = (60 - 40) = 20Run = (20 - 0) = 20

Slope = 20/20 = 1

Hence, the equation can be expressed thus by substituting the x1 and y1 values into the expression :

y - 60 = 1(x - 20)

Therefore, the point - slope expression for the graph is y-60 = 1(x - 20).

Learn more : https://brainly.com/question/11444273

8x+2 factored using the GCF.

My friend is wondering this, I have seen responses but like all are different. Please help!

7th grade math.

Answers

Answer:   2(4x+1)

Explanation:

For now, ignore the x.

The GCF of 8 and 2 is 2 since 2 is a factor of both

2 = 2*1

8 = 2*4

So if we had 8+2 we can factor 2 out like so to get 2*(4+1)

Notice that I divided each term by 2 when going from 8+2 to 4+1. Then I stuck a 2 outside. You can use the distributive property to check the result.

Similarly,

8x+2 = 2(4x+1)

which you can also check using the distributive property.

Hate my teacher for this one smh....
Is there enough information to prove the two triangles congruent? If yes, write the congruence statement and name the postulate you would use. If no, write not possible and tell what other information you would need.

Answers

Answer:

Step-by-step explanation:

yes, both are congruent by SAS Postulate

<SQP=<SQR  (common in both (construction))

QS=QS (common side in both angle)

QP=QR ( as given)

hence, QPS=QRS

by SAS postulate

By SAS postulate Δ QSP ≅ Δ QSR.

What is Congruence Rule?

The triangles are said to be congruent when two angles and a non-included side of one triangle match the corresponding angles and sides of another triangle.

When two angles and the included side of one triangle are equal to two angles and the included side of another triangle, two triangles are said to be congruent.

Given:

In Δ QSP and Δ QSR

<SQP=<SQR  (common in both (construction))

QS=QS (common side in both angle)

QP=QR ( as given)

So, by SAS postulate Δ QSP ≅ Δ QSR.

Learn more about Congruence rule here:

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What is the missing step in this proof?
(image attached below)

Answers

C is the missing reason in this proof.
The missing proof is c

The sum of the digits of a certain two digit number is 8. By reversing the digits the number is increased by 18. What is the number?

Answers

6 and 2
Hope this helps

Which number is greater . 84 or 9.3

Answers

I think the answer is 9.3, but I’m not sure

Answer:

9.3

Step-by-step explanation:

9.3 is greater because 9.3 has a bigger value than .84 because .84 is in the hundredths place which is less than the unit digit which is 9 from 9.3

Hope this helps!

How many of y'all are in virtual school and using this app for help​

Answers

Answer:

thx

Step-by-step explanation:

really needed them and merry christmas

Whar is an example of a transversal?​

Answers

Answer: Lightwave forms the most important example of a transverse wave. In case of the light waves, particles travel perpendicular to the direction of the waves. It is the visible spectrum that is visible to the human eye and is responsible for the sense of sight.

Step-by-step explanation:

Answer:

♡ hi fairy ♡

An example of a transversal is  line that intersects a system of lines.

hope I could help you. have a great day!

-madeline/madi

✧・゚: *✧・゚:・゚✧*:・゚✧・゚: *✧・゚:・゚✧*:・゚✧

Step-by-step explanation:

Help me with this plz

Answers

Answer:

zero

Step-by-step explanation:

State the slope and y-intercept of the graph of y + 2x = 3.

Answers

Answer:

y-intercept=(0, 3)  slope=-2

hope this help

Step-by-step explanation:

Answer: y intercept= 3 slope is -2

Step-by-step explanation: you subtract 2x from the left and right side and end up with y= -2x+3 if you substitute x for 0 then you get 3 for the y intercept.

I need to know the value of X and how to get the value of X.

Answers

Answer:

2

Step-by-step explanation:

take three off.

x+x=4

2x=4

x=2.

Hope this helps :D

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