Question

If x varies inversely with y and x = 8 when y = 10, find y when x = 6.

Answer 1

Inverse variation equation is: \(\large\color{black}{ y=\frac{\LARGE k}{\LARGE x} }\)
(Or, \(\large\color{black}{ k=yx }\), it is the same thing)

you are given that: \(\large\color{black}{ x=8 }\) when \(\large\color{black}{ y=10 }\)
plug in 8 for x, and 19 for y, to find the \(\large\color{black}{ k }\)

tell me what you get for \(\large\color{black}{ k }\) ?

Answer 2

(you are plugging 8 and 10, into \(\large\color{black}{ k=yx }\) )

Answer 3

80?

Answer 4

I have no idea whats going on.

Answer 5

yes, \(\large\color{black}{ k=80 }\)

Answer 6

So, then, you have: \(\large\color{black}{ y=\frac{\LARGE 80}{\LARGE x} }\)

now you are asked to find y, when x=6,
So plug in 6 for x (into \(\large\color{black}{ y=\frac{\LARGE 80}{\LARGE x} }\) )

Answer 7

then, what do you get for \(\large\color{black}{ y}\) ?

Answer 8

the choices are
a y=3/20
b y=4.8
c y=7.5
d y=40/3

Answer 9

okay, you just need to preform the last step,

to plug in \(\large\color{black}{ 6 }\) for \(\large\color{black}{ x }\), INTO \(\large\color{black}{ y=\frac{\LARGE 80}{\LARGE x} }\), and sovle for y.

Answer 10

y=80/6 or y=13.333

Answer 11

so d

Answer 12

that is not one of your options, but \(\large\color{black}{ \frac{\LARGE 80}{\LARGE 6} }\) can be reduced, yes \(\large\color{black}{ \rm D }\) is correct.

Answer 13

Good work.

Answer 14

thanks man you're awesome!

Answer 15

you welcome!

Answer 16

I will post some instructions they might be a bit long, but quite comprehensive, I have them in my word doc

Answer 17

Something for a user to do on \(\LARGE\color{black}{ \rm \color{blueviolet}{o}\color{red}{p}\color{green}{e}\color{blueviolet}{n} \rm \color{red}{s}\color{green}{t}\color{blueviolet}{u}\color{red}{d}\color{green}{y} \color{darkgoldenrod}{\bf :} }\)
\(\huge\color{white}{ \left| \right| }\)
\(\large\color{blue}{ {\huge\text{ ~}}~~{\rm Ask~question(s).} }\)
\(\normalsize\color{black}{ \bullet }\) try to ask specific questions
\(\normalsize\color{black}{ \bullet }\) and please, one (or at least not too many questions) per post.
\(\normalsize\color{black}{ \bullet }\) You can ask as many questions as you want.
\(\normalsize\color{black}{ \bullet }\) Bump your question (if you want to).
\(\normalsize\color{black}{ \bullet }\) Close your question when/if you are done.
\(\huge\color{white}{ \left| \right| }\)
\(\large\color{blue}{ {\huge\text{ ~}}~~{\rm Answer~question(s).} }\)
\(\normalsize\color{black}{ \bullet }\) Don't give out direct answers or steps (explain with examples, or
any helpful links that have examples. Don't do questioner's work.
\(\normalsize\color{black}{ \bullet }\) Be patient for the poster to understand something. Be nice!
\(\normalsize\color{black}{ \bullet }\) You can answer as many questions as you want.
\(\normalsize\color{black}{ \bullet }\) 2 exceptions, groups where straight forward answers are always allowed.
\(\normalsize\color{black}{ * }\) \(\normalsize\color{magenta}{ \rm OpenstudyFeedback}\) group,
(Link to it: http://openstudy.com/study#/groups/OpenstudyFeedback )
\(\normalsize\color{black}{ * }\) \(\normalsize\color{magenta}{ \rm latex~~practicing}\) group,
(Link to it: http://openstudy.com/study#/groups/latex practicing! :) )
\(\huge\color{white}{ \left| \right| }\)
\(\large\color{blue}{ {\huge\text{ ~}}~~{\rm Find~a~section:} }\)
\(\normalsize\color{black}{ \bullet }\) Click "Find More Subjects" (the top left corner, towards the center)
\(\normalsize\color{black}{ \bullet }\) Type the name of the section in the search.
\(\huge\color{white}{ \left| \right| }\)
\(\large\color{blue}{ {\huge\text{ ~}}~~{\rm Tag~someone:} }\) Write @ in front of the username
(without any space between the username and the @).
See how I tagged you: @
\(\huge\color{white}{ \left| \right| }\)
\(\large\color{blue}{ {\huge\text{ ~}}~~{\rm Send~Message:} }\)
\(\normalsize\color{black}{ \bullet }\) Click someone's username.
\(\normalsize\color{black}{ \bullet }\) A white box (with user's stats) will appears, then click "Send Message."
\(\normalsize\color{black}{ \bullet }\) Type your message.
\(\normalsize\color{black}{ \bullet }\) Click submit (don't close until the message is done submitting).
\(\normalsize\color{black}{ \bullet }\) After the message is sent, it will say:
“\(\normalsize\color{gray}{ Message~successfully~sent.~Hermes~would~be~proud.}\)

\(\normalsize\color{black}{ * }\) More instructions about the policy you can find on:
http://openstudy.com/code-of-conduct (you might see there
something that I have told you just now. This is the code of conduct.)

\(\normalsize\color{black}{ * }\) If you have some questions about the codes, how to use colors, etc:
http://openstudy.com/study#/updates/52e12f56e4b0942cc9de719e
\(\huge\color{white}{ \left| \right| }\)
If you have questions about this site we will be happy to address them
with you!
\(\huge\color{white}{ \left| \right| }\) Welcome to \(\large\color{black}{ \rm \color{blue}{o}\color{green}{p}\color{blue}{e}\color{green}{n} \rm \color{blue}{s}\color{green}{t}\color{blue}{u}\color{green}{d}\color{blue}{y} ~_{\Huge\color{red}{\ddot \smile }}{\large !}}\)

Answer 18

\(\huge\color{blue}{welcome ~to ~open ~study}\)

Answer 19

ignore the question mark symbols

Answer 20

dahhhhhhhhhhhh`

Answer 21

Nnesha, use 'rm for the font, it would be better, trust me:

Answer 22

I mean \rm

Answer 23

\(\large\color{blueviolet}{ {\rm Welcome~to~openstudy}! }\)

Answer 24

the code is : `\(\large\color{blueviolet}{ {\rm Welcome~to~openstudy}! }\)`

Answer 25

@hafeez1 look this pic
click on best response to tell him how \(\large\color{red}{{\rm AWESOME}!! }\) HE IISH

Answer 26

Nnesha, I really don't care about all of these medals

Answer 27

\(\large\color{ORANGE}{ {\rm THEN~CLOSE ~YOUR ~QUESTION }! }\)
is it better ;) :P

Answer 28

my profile already looks super suspicious, esp if you look at how many questions I asked and answered in English, and how many medals I got.....
even wio once wondered how come I had 4K medals, but that was a while ago...

Answer 29

Ooh we are all welcoming? Here is mine :P

\(\bf\huge\color{#ff0000}{W}\color{#ff2000}{e}\color{#ff4000}{l}\color{#ff5f00}{c}\color{#ff7f00}{o}\color{#ffaa00}{m}\color{#ffd400}{e}~\color{#bfff00}{t}\color{#80ff00}{o}~\color{#00ff00}{O}\color{#00ff40}{p}\color{#00ff80}{e}\color{#00ffbf}{n}\color{#00ffff}{S}\color{#00aaff}{t}\color{#0055ff}{u}\color{#0000ff}{d}\color{#2300ff}{y}\color{#4600ff}{!}\color{#6800ff}{!}\color{#8b00ff}{!}\)

Hey there!!! Since you are new here, read this legendary tutorial for new OpenStudiers!!
http://openstudy.com/study#/updates/543de42fe4b0b3c6e146b5e8
@hafeez1 :P