Mathematics
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OpenStudy (anonymous):
Question?
http://prntscr.com/29b6ea
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ganeshie8 (ganeshie8):
standard form of circle :-
\(\large (x - \color{green}{h}) + (y-\color{green}{k}) = \color{red}{r}^2\)
ganeshie8 (ganeshie8):
radius = \(\large \color{red}{r}\)
center = \(\large \color{green}{(h, k)}\)
OpenStudy (anonymous):
k
ganeshie8 (ganeshie8):
compare ur equation wid above
OpenStudy (anonymous):
we dont have k
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ganeshie8 (ganeshie8):
0 is there for the orphaned additions
ganeshie8 (ganeshie8):
:P
OpenStudy (anonymous):
ok so it means
(x-5)+(y-0) = 19^2
ganeshie8 (ganeshie8):
Yes,
\((x-5)^2 + y^2 = 38 \)
\((x-5)^2 + (y-0)^2 = 38 \)
ganeshie8 (ganeshie8):
ugh no, 19^2 is not equal to 38 ok
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ganeshie8 (ganeshie8):
\(\large (x-5)^2 + (y-0)^2 = \sqrt{38}^2 \)
OpenStudy (anonymous):
19^2 = 361
OpenStudy (kc_kennylau):
@ganeshie8 you're last equation is the same as what i just wrote...
ganeshie8 (ganeshie8):
@kc_kennylau u wrote something ?
OpenStudy (anonymous):
Did you read the replies?
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ganeshie8 (ganeshie8):
its not showing up here :|
ganeshie8 (ganeshie8):
I see only my/lily replies hmm
OpenStudy (anonymous):
Well it shows up on mine did you look up above all your work?
OpenStudy (kc_kennylau):
@Victoria_Davis_2018 she opened another question so that's why it's not here
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OpenStudy (anonymous):
Yes I see that now sorry @ganeshie8
ganeshie8 (ganeshie8):
ganeshie8 (ganeshie8):
i see that on my screen
ganeshie8 (ganeshie8):
oh ok cool :)
i was worried if the OS is not working again lol
OpenStudy (anonymous):
why cant i see the replies they are not loading up let log out then log in wait
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ganeshie8 (ganeshie8):
hey Lily we're good, lets continue...
OpenStudy (kc_kennylau):
ganeshie8 (ganeshie8):
oh ya i see that was in previous post ok now i get it :)
OpenStudy (anonymous):
Yeah sorry I can be really stubborn sometimes, really sorry
OpenStudy (anonymous):
so the correct option is J
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OpenStudy (kc_kennylau):
nope in \(x-\color{green}5\) the \(\color{green}h\) is 5 :)
OpenStudy (anonymous):
So H then
OpenStudy (anonymous):
why x-5 so -5 is negative
OpenStudy (anonymous):
But in x - 5 when you take the x away it is -5
OpenStudy (kc_kennylau):
because it's \(\Large (x-\color{green}{h})^2\) not \(\Large (x+\color{green}{h})^2\) :)
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OpenStudy (anonymous):
ok
OpenStudy (anonymous):
Well I guess that is a pretty good reason so it is F?
OpenStudy (kc_kennylau):
yes :)
OpenStudy (anonymous):
Ok well I say that was a pretty good guess because I don't know how to do all this
OpenStudy (anonymous):
ok but why F i mean \[\sqrt{38}^2\]
so the square and square root cancel themselves so it will be just 38
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OpenStudy (kc_kennylau):
yep, but \(\Large\color{red}{r}^2\) is required, not \(\Large\color{red}{r}\), so we have to change \(38\) to something squared :)
OpenStudy (anonymous):
Sorry I know these are not related to the topic, but they could help someone
OpenStudy (kc_kennylau):
Jesus will always be king.
OpenStudy (anonymous):
thanks
OpenStudy (kc_kennylau):
no problem :)