A ball is in any one of n boxes and is in the ith box with probability Pi
. If the ball is in box i, a search of that box will uncover it with probability
αi
. Show that the conditional probability that the ball is in box j, given that a search of box i did not uncover it, is
Pj
1−αiPi if j≠i
(1−αi)Pi
1−αiPi if j=i

13

step-by-step explanation:

divide the cost of the total of sodas you bought by the cost of one soda, for example:

$24.57 divided by $1.89 is 13 which means you bought 13 sodas

  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or  

1.3

step-by-step explanation:

3x2=6   9x+6

bring down the 6 on both sides

6+6=12

12= 9x

divide by 9

12/9 =

1.3 =x