Answer:
x=1.6
Step-by-step explanation:
.40=.25x
you move .25 to the other side which would look like this .40/.25=x and then you solve for x, which you would get 1.6.
Answer: i don't even know what a factor is
a. $3000
Let be the random variable denoting the number of girls that are born. Then has a binomial distribution on babies and probability of getting a girl . The probability we want is