ANSWER FAST! TIMED TEST!

Find the equation of the ellipse with foci at (8,0) and (-8,0) and a vertex at (12,0)

Step-by-step explanation:

We want to find the equation of an ellipse with foci at (8,0) and (-8,0) and a vertex at (12,0)

This is a horizontal ellipse with its center at the origin.

The equation is of the form:

Since the vertex is at (0,12)------>a=12

Since the foci is at , we have c=8

Using

We have  

Our equation now becomes:

Or

the answer   is 200

step-by-step explanation:

this is a problem about poisson probabilities.   i don't know if you've

already studied poisson distributions, or if you have a place to look

to read more about the subject.  

here's how you can see a poisson distribution coming.   when there are

a lot of events that may happen at any time (or any place), and when

you're counting how many of them happen at a particular time (or a

particular place), and each event is independent of the others, then

the result is a poisson distribution.   this is roughly true for the

chocolate chips; one chip being in a cookie has only a small effect on

the probability that another chip will be in the cookie.

once you know you have a poisson distribution, you know a lot.   there

is only one parameter to a poisson distribution, so if you know the

mean, you know everything.   the form of the distribution is

  probability of n chips = {[e^(-x)]*(x^n)} / (n! )

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540