Sam is 13 years old. His brother, Jonathan is 3 times as much as Sam is. His sister, Jayla is 2 times as much as Jonathan. How old is Jayla and Jonathan? Ill give you brainliest if you answer the question correctly!

Jonathan is 39

Jayla is 78

Step-by-step explanation:

13: Sam

? 1: Jonathan 3*sam

? 2: Jayla 2* Jonathan

13 * 3 = 39

Jonathan is 39

39 * 2 =  78

Jayla is 78

40 is the final : )

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! )