triangle a' b' c' is a dilation of the triangle abc.
what is the scale factor?

These triangles have scale factor 2 : 1 from big one to the small one.

Hope it helps.

The scale factor is 1/2.

Step-by-step explanation:

For this question, the scale factor would be 1/2. Since we are going from a larger triangle to a smaller one, we know the scale factor must be less than one. When you look at corresponding sides (such as AB to A'B' and BC to B'C'), you can see that the length of the dilated copy is half of the original side. For example, BC has a length of 9, and B'C' has a length of 4.5, or 4 and 1/2. 4.5 is half of 9, so the scale factor for this dilation is 1/2.

idk

step-by-step explanation:

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! )