Question

W varies jointly with the inverse of the cube root h and directly with A; W = 5 when h = 216 and A = 200

Answer 1

Could someone please help me?

Answer 2

btw is there any key words i should know

Answer 3

\( W=\dfrac{A}{\sqrt[3]{h}}\)

Answer 4

I think they want you symbolize the word problem

Answer 5

so W = 3A / 20 3sqrt(h)?

Answer 6

your answer isn't on here

Answer 7

never mind

Answer 8

Thank you

Answer 9

would you mind helping with one more?

Answer 10

@avonniculleyy
The question does not seem to be complete (didn't tell you what it expects).

Answer 11

M varies jointly with the inverse of the square of B and directly with the cube of b.

Answer 12

its telling me to describe the variation

Answer 13

@OOOPS

Answer 14

If they want the equation for W, there needs to be a proportional constant, something like C or K, because it says "M varies jointly... ", didn't say equal.

Answer 15

A varies directly with B is written A=kB

Answer 16

Is this your question, or you have another one?

Answer 17

I think its, M = kB^2/b^3

Answer 18

that was my question

Answer 19

What about it? M=kB^2/b^3 is not related to the earlier question, is it?

Answer 20

yea it is

Answer 21

its one of the answer

Answer 22

I don't see B and b in the previous question!

Answer 23

M varies jointly with the inverse of the square of B and directly with the cube of b.

Answer 24

Ah, that's different! :)

Answer 25

This is my last question and I want to get it right

Answer 26

```
M varies jointly with the inverse of the square of B and
directly with the cube of b.

```
M varies, so M=k(...), ok so far?

Answer 27

X varies directly with the square of Y is written X=kY^2.

Answer 28

So it's M = kB^2 / b^3?

Answer 29

You have to check your answer against the question for "Directly" and "inversely" .

Answer 30

X varies inversely with the cube of Z is written X=k/Z^3.

Answer 31

So if we have
X varies directly with the square of Y and inversely with the cube of Z
is written X=kY^2/Z^3.
(remember, this is an example, not your question).

Answer 32

ohh. okay

Answer 33

So what is your final answer?

Answer 34

do you mind staying here 4 a bit? and check my answer?

Answer 35

no problem. Work it out and post!

Answer 36

Will do!

Answer 37

is there for me 2 add u so I can text u when I need your help?

Answer 38

are you there @mathmate

Answer 39

You can message me on OS, or tag me when I'm online.
Unfortunately I am on and off a lot, so message is probably more efficient.

Answer 40

Write a general formula to describe the variation: x varies jointly with the inverse of r and the inverse of the square of the sum of y and z.

Answer 41

what did you get for the previous one?

Answer 42

I got M = k / (B+b)^2

Answer 43

The question didn't say the "sum of B and b", so it cannot be right.
Think of the following scheme: