anonymous
  • anonymous
6÷2(1+2)=?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
Facebook!
myininaya
  • myininaya
6dividedby2(3) 3(3) 9
anonymous
  • anonymous
If only...

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anonymous
  • anonymous
1?
anonymous
  • anonymous
Yes.
myininaya
  • myininaya
no 9
myininaya
  • myininaya
use order of operations
anonymous
  • anonymous
Yeah, parenthesis first.
myininaya
  • myininaya
the multiplication and division as it occurs left to right
myininaya
  • myininaya
then not the
myininaya
  • myininaya
division occurs first so 6 divided by 2=3 and then multiplication occurs 3(3)=9
anonymous
  • anonymous
Yeah, yeah 9 we get it haha. No really, no lie. it is 9. 1 is common mistake, because of the whole pemdas.
myininaya
  • myininaya
lol
myininaya
  • myininaya
hey loco you figured out your polar question?
anonymous
  • anonymous
6/2(1+2) =6/2(3) =3(3) =9
anonymous
  • anonymous
not yet myininaya
anonymous
  • anonymous
i need help really badly with it :(
anonymous
  • anonymous
The one I was attempting to help on loco?
myininaya
  • myininaya
did you try ising (x=rcos(pheta),y=rsin(pheta))
anonymous
  • anonymous
yeah, but the answers i get are decimals and they don't work and i don't know how to get the exact value.
myininaya
  • myininaya
deciamls? thats weird shouldn't be decimals do you have your calculator in radians?
anonymous
  • anonymous
yeah, should i put it in degrees?
myininaya
  • myininaya
no put in degrees if you are using degrees but 15pi is in radians
myininaya
  • myininaya
so we are using radians
anonymous
  • anonymous
Use a unit circle, not a calculator.
anonymous
  • anonymous
I changed it to degrees, but the answer is still in decimals but the only thing is that it becomes negative.
myininaya
  • myininaya
when i did I got (-1,0)
myininaya
  • myininaya
right you could just use the unit circle
anonymous
  • anonymous
how did u get that? can u show me
myininaya
  • myininaya
thats what i did
anonymous
  • anonymous
I would think it'd be much easier, avoid the calculator errors haha.
myininaya
  • myininaya
cos(15pi)=cos(pi)=-1
myininaya
  • myininaya
wait i forgot to multiply the 6 so it is (-6,0)
anonymous
  • anonymous
(-1,0) are wrong says the hw program
anonymous
  • anonymous
there we go that makes more sense
myininaya
  • myininaya
lol
anonymous
  • anonymous
no it's still wrong
myininaya
  • myininaya
we are trying to evaluate (6cos(15pi)),6sin(15pi))
myininaya
  • myininaya
what is it?
anonymous
  • anonymous
(-6,0) is right.
anonymous
  • anonymous
this is the original prob \[6\sqrt{3}, -6\]
anonymous
  • anonymous
So the problem I tried helping you with?
myininaya
  • myininaya
are we converting that to polar coordinates?
anonymous
  • anonymous
Convert the rectangular coordinates to polar coordinates with r 0 and 0 θ 2π.\[r>0 and 0 \le \theta <\]
myininaya
  • myininaya
ok i was doing converting (6,15pi) to polar my bad
myininaya
  • myininaya
to cartesian*
anonymous
  • anonymous
I had everything pretty much outlined for you on your post loco, well besides the answer.
myininaya
  • myininaya
(12, 7pi/6)
anonymous
  • anonymous
Wouldn't it be (12, 11pi/6)
myininaya
  • myininaya
you might be right one sec..
myininaya
  • myininaya
darn it you are right because cos(11pi/6)=sqrt(3)/2
anonymous
  • anonymous
thanks you so much for taking ur time to help me guys. i wish i could give u real medals :)
anonymous
  • anonymous
I wish I could receive a real medal haha you're welcome.
myininaya
  • myininaya
what loco i wanted to draw you something k?
anonymous
  • anonymous
ok
anonymous
  • anonymous
YESSSSSSSSSSSSSSSSSSSSSSSSSSSS!!! Finally :O
myininaya
  • myininaya
1 Attachment
myininaya
  • myininaya
when I drew the point (6sqrt(3),-6) it was just an approximation of where it would lie.
anonymous
  • anonymous
Wow... u did that much work. I feel bad now :(
myininaya
  • myininaya
why? the only reason i would do is because i enjoy lol. but do you why we use that cos^-1(sqrt(3)/2) instead of the others
myininaya
  • myininaya
because its where our point lies
anonymous
  • anonymous
oh ok
myininaya
  • myininaya
so you completely get it?
anonymous
  • anonymous
not completely, some of it. don't worry i'll be awake all night trying to understand it.
anonymous
  • anonymous
can u try to help me on the other question i posted?
myininaya
  • myininaya
ok go to it and i will follow you k?
anonymous
  • anonymous
ok

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