PLZ HELP WILL GIVE BRAINLIEST

A. Yes

B. No

C. Yes

Step-by-step explanation:

A. 90 divided by -9 equals -10. So -10+10=0

B. -10 times -9 equals 90. 90+90=180

C. -90 dived by 9 equals -10. Subtracting a negative number is equal to adding it so -10 - (-10) = 0

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! )

answer: no, but if it does it's a obvious pattern.

step-by-step explanation: