anonymous
  • anonymous
Please check my work for this one problem! X=0.2 & Y=3 when Z=2, & Z varies jointly with X & Y. z=kxy 2=k(0.2)(3) 2/0.6=k(0.6)/0.6 Z=3.3xy
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
k=1/0.3,not 3.3.so z=xy/0.3
anonymous
  • anonymous
Can you explain how you got that a little please. :b
anonymous
  • anonymous
|dw:1371726212727:dw| alright?

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anonymous
  • anonymous
So then wouldn't my answer be z=(1/0.3)xy?
anonymous
  • anonymous
yes it is
anonymous
  • anonymous
Thanks so much!
anonymous
  • anonymous
np :D
anonymous
  • anonymous
Would you mind helping me with another question?
anonymous
  • anonymous
yes,ofcourse
anonymous
  • anonymous
Is the relationship between the values in each table a direct variation, inverse variation, or neither? Write equations to model any direct or indirect variations. |dw:1371424216538:dw|
anonymous
  • anonymous
i think its neither direct or inverse.its not direct because(taking the simplest cases),when x is tripled from 3to 9,y is not tripled.had it been a direct variation,y should also have been tripled and become 18 rather than 12
anonymous
  • anonymous
I think it's an inverse relationship because y=k/x. k=xy (I think) 6=18/3 8=40/5
anonymous
  • anonymous
What do you think? :P
anonymous
  • anonymous
for an indirect variation,when a quantity increases,then other quantity(inversely proportional to it),decreases.in the given table,when x increases,y also increases,so,its certainly not an indirect variation either
anonymous
  • anonymous
You're right. How do you tell that x increases y also increases i dunno how to tell that. :P Thanks again for your help! <3
anonymous
  • anonymous
you can easily see that in the table.when x increases from 3 to 5,y also increases from 6 to 8.when you go across each row of the table,there is an increment in x and the corresponding value of y also increases
anonymous
  • anonymous
ohhh okayy. So for my answer I should just say that as x increases so does y so it is neither an inverse or direct variation?
anonymous
  • anonymous
that arguement(when x increses so does y) is for proving that the relation is not inverse.for proving that it is not direct i've already stated the reason above
anonymous
  • anonymous
For proving it's not direct I could just say that xy is not constant correct? I'm sorry for all of the questions
anonymous
  • anonymous
WOAH! u've simplified it for me.for direct,say that x/y is not a constant and for inverse,say that xy is not a constant. and it doesn't at all bother.if fact it feels great to help :)
anonymous
  • anonymous
Aha. :) Thank you!!!!!
anonymous
  • anonymous
you may ask any other question if you have,without hesitation
anonymous
  • anonymous
Oh my goodness you are seriously such a saint! <333
anonymous
  • anonymous
I'm going to start a new question so that you get best answer again.
anonymous
  • anonymous
LOL that's flattery.i don't remember anyone calling me a saint in my entire life!
anonymous
  • anonymous
Glad I could be the first. ;) Haha.

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