mj.jones90
Find the following values to the equation of the ellipse (x+5)^2/25 +(y-7)^2/144 = 1.
a. Center
b. Vertices
c. Length of minor axis
d. Length of the major axis
e. Foci
Delete
Share
This Question is Open
dpaInc
Best Response
You've already chosen the best response.
1
here is all you need to answer this question:
\[\large \frac {(x-h)^2}{a^2}+\frac{(y-k)^2}{b^2}=1 \]
where (h,k) is the center
vertices for this ellipse: (h,k\(\pm \)b)
length of the minor axis: 2a
length of major axis: 2b
foci: (h,k\(\pm \)c
where \(\large c^2 =b^2-a^2\)
dpaInc
Best Response
You've already chosen the best response.
1
let's find (h,k) first...
h=
k=
??
dpaInc
Best Response
You've already chosen the best response.
1
look at your equation and match it up with the one i wrote... what matches with h and k?
mj.jones90
Best Response
You've already chosen the best response.
0
please hurry i have to have this done in 5 minutes or i fail1!
mj.jones90
Best Response
You've already chosen the best response.
0
and thank you! :D
mj.jones90
Best Response
You've already chosen the best response.
0
idk what?
dpaInc
Best Response
You've already chosen the best response.
1
\(\large \frac {(x-h)^2}{a^2}+\frac{(y-k)^2}{b^2}=1\)
\(\large \frac {(x+5)^2}{5^2}+\frac{(y-7)^2}{12^2}=1\)
mj.jones90
Best Response
You've already chosen the best response.
0
oh ok
mj.jones90
Best Response
You've already chosen the best response.
0
so what are the lengths without vvariables? o.O
dpaInc
Best Response
You've already chosen the best response.
1
for the minor axis, its 2a
for the major axis, its 2b
you need to tell me what a and b are....
mj.jones90
Best Response
You've already chosen the best response.
0
3 minutes!!!!!
mj.jones90
Best Response
You've already chosen the best response.
0
but what about the ellipse that is nothing but variables?
dpaInc
Best Response
You've already chosen the best response.
1
a is 5
b is 12
mj.jones90
Best Response
You've already chosen the best response.
0
and am i allowed to have variable in the legths?
dpaInc
Best Response
You've already chosen the best response.
1
the equation tells you everything you need to know..... you can identify all these quantities i'm asking for just by looking at your equation...
dpaInc
Best Response
You've already chosen the best response.
1
i already gave you a and b...
mj.jones90
Best Response
You've already chosen the best response.
0
so 2a is 10?
dpaInc
Best Response
You've already chosen the best response.
1
yes.
mj.jones90
Best Response
You've already chosen the best response.
0
and 2b is 24?>
dpaInc
Best Response
You've already chosen the best response.
1
yes
mj.jones90
Best Response
You've already chosen the best response.
0
and the foci and eellipse?
mj.jones90
Best Response
You've already chosen the best response.
0
what is c?
dpaInc
Best Response
You've already chosen the best response.
1
use the relation i showed u.... in the first post...
dpaInc
Best Response
You've already chosen the best response.
1
you already know what a and b are.. you can find c...
cookies
Best Response
You've already chosen the best response.
0
hmmm i really do not know this plus i am slightly brain dead btw r u a guy or girl
mj.jones90
Best Response
You've already chosen the best response.
0
dont i just have get the square roote of c^2 and since c^2=119 than the answer would be 10.9? right?
mj.jones90
Best Response
You've already chosen the best response.
0
cookies....why does it matter?
cookies
Best Response
You've already chosen the best response.
0
just wanna know
mj.jones90
Best Response
You've already chosen the best response.
0
why?
mj.jones90
Best Response
You've already chosen the best response.
0
dpanlc?
mj.jones90
Best Response
You've already chosen the best response.
0
u there?
cookies
Best Response
You've already chosen the best response.
0
idk so i dnt get it wrong
mj.jones90
Best Response
You've already chosen the best response.
0
reaally/?
mj.jones90
Best Response
You've already chosen the best response.
0
well i'm a girl....soooooooo
cookies
Best Response
You've already chosen the best response.
0
yess i dnt wanna be rude
kewl glad to have a gal pal