X 1 2 3 4
p(x) 0.40 0.20 0.15 ?
If the items are only 4. The total of the probability must be 1 or 100%
1 - 0.40 - 0.20 - 0.15 = 0.25
The probability of 4 is 0.25.
Answer:
0 because 1-1=0 and that is the answer
It's 4/3 because of the distance formula
Account balance = $389.42 + $389.42 (0.032) (7)
$389.42 + $87.23 = $ $476.65 (answer)
Simple proportions.
You want a 1:5 ratio.
You have a 5:1 ratio.
So you add another 24 drops of white.
5:25 = 1:5
or
5/x = 1/5 and cross multiply.
