Bag a contains 3 white marbles and 2 red marbles. bag b contains 6 white marbles and 3 red marbles. a person draws one marble from each bag. find the probability that both marbles are white. 2/5 3/5 9/14

Step-by-step explanation:

Bag A:

White = 3

Total = 3 White + 2 Red = 5

Prob (white marble from A) =

Bag B:

White = 6

Total = 6 White + 3 Red = 9

Prob (white marble from B) =

Prob (white from Bag A and white from Bag B)

= Prob (white marble from A) x Prob (white marble from B)

= x

=

i dont know

step-by-step explanation:

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)