1 - Express each ratio in simplest form. a) 36 to 9. b) 14 : 6. c) 12 : 15. d) 8 : 4/5

Below in bold.

Step-by-step explanation:

a) 36/9 to 9/9

= 4 to 1.

b) 7 to 3.

c) 4 : 5

d)  8 * 5 to 4/5 * 5

= 40 : 4

= 10 : 1.

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! )

or