9. What is the value of x in the solution to this system of equations?
3x-5 y=22
y=-5x+ 32

x=13/2

Step-by-step explanation:

Solved using the elimination method

3x-5y=22

x5(y=-5x+ 32)x5 - Second equation multiplied by 5

3x-5y=22

25x+5y=160

x=182/28

Simplified (divide each term by 14): x=13/2

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! )

kbmflmklbhml; bmlzb; bdhzz

step-by-step explanation: