A community for students.
Here's the question you clicked on:
 0 viewing
cutiecomittee123
 one year ago
how do i find the foci of an elipse?
cutiecomittee123
 one year ago
how do i find the foci of an elipse?

This Question is Closed

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2do you know where the center and vertexes are?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2if so, then the foci are an odd construction of the usual pythag thrm ... in this case, b and c are legs, and a is a hypotenus giving us a rather strange look of c^2 + b^2 = a^2, such that x is the distance from center to focus

cutiecomittee123
 one year ago
Best ResponseYou've already chosen the best response.0well the equation i have is (x+2)^2/9+(y4)^2/36=1

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2then we know a^2 and b^2, right?

cutiecomittee123
 one year ago
Best ResponseYou've already chosen the best response.036+ =9 c^2=25

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2so 3cbrt3 = c, or this distance from center.

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2so, tell me our center, and in what direction we need to move

cutiecomittee123
 one year ago
Best ResponseYou've already chosen the best response.0center (2,4) we move left and right

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2not left and right notice that under y is bigger than under x y is bigger than x, so our focuses are going to be in relation to y dw:1433524715502:dw

cutiecomittee123
 one year ago
Best ResponseYou've already chosen the best response.0so (2, 4+ or  3sqrt3)

cutiecomittee123
 one year ago
Best ResponseYou've already chosen the best response.0can you help me with one other thing

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2depends on what it is and how good my memory is :)

cutiecomittee123
 one year ago
Best ResponseYou've already chosen the best response.0finding the eccentricity of (x+7)^/16+(y3)^2/4=1

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2define the formula for eccentricity

cutiecomittee123
 one year ago
Best ResponseYou've already chosen the best response.0eccentricity = c/a

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2thats what i thought so sqrt(c^2/a^2) should work .. c^2 is the difference of the bottoms, and a^2 is the larger of them

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2um, 16 is bigger than 4

cutiecomittee123
 one year ago
Best ResponseYou've already chosen the best response.0because sqrt 16 is 4

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2oh, youve got some notation off then sqrt(12/16) sqrt(3/4) sqrt(3)/2

cutiecomittee123
 one year ago
Best ResponseYou've already chosen the best response.0Wait I dont get how you reduced those? wouldnt it just be sqrt(3/4)

cutiecomittee123
 one year ago
Best ResponseYou've already chosen the best response.0Like why did you reduce so far?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2thats what you do with fractions, you reduce them till they have no common factors

cutiecomittee123
 one year ago
Best ResponseYou've already chosen the best response.0So final answer is sqrt (3/2)

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2\[\sqrt{\frac{164}{16}}\] \[\sqrt{\frac{12}{16}}\] \[\sqrt{\frac{4*3}{4*4}}\] \[\sqrt{\frac{3}{4}}\] \[\frac{\sqrt3}{\sqrt4}\]

cutiecomittee123
 one year ago
Best ResponseYou've already chosen the best response.0then reduce? or

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2can it be simplified more?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2i just showed you some of the process, i didnt finish it ... i figured youd be cognizant enough to see where its going.

cutiecomittee123
 one year ago
Best ResponseYou've already chosen the best response.0yea sqr t4 is equal to 2

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2then lets go with sqrt(3) /2

cutiecomittee123
 one year ago
Best ResponseYou've already chosen the best response.0Then you have sqrt(3/2) :) thanks

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2no, not sqrt (3/2) im not sure if its a typing error of yours, or if you are making a mistake. it is: sqrt(3)  2

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2sqrt(3) sqrt(3)  =  sqrt(4) 2

cutiecomittee123
 one year ago
Best ResponseYou've already chosen the best response.0yeah thats how I percieved it and meant it
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.