16 in 30 in
3 in
50 in
A rectangle is removed from the middle of a larger rectangular shaped board. What is the area of the remaining board?
198 in
543 in?
1000 in
1452 in

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! )

-22

times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3

- (2, -7)

- lines r and s and lines t and u must be parallel

3 3 6, because in every triangle the longer side is always shorter than the sum of the other two