It is interesting to note that back in 1940 if a person in the United States was selected at random, then his or her age X had a distribution that was almost given by the p. d.f. of the form f(x) = {c 0 < x < 35}
c[1+ 3/140(35-x)], 35 <= x<=81 2/3

Required:
a. Find c so that f(x) is a p. d.f.
b. In 1940, about what percentage of the U. S. population was older than 65?
c. What was the median age then?

What value of x will make the triangles similar by the sss similarity theorem?

Which statements about these triangles is true

1. if we have 3 babies what is the probability they’re going to be all boys? 2. if we roll 2 die at the same time what is the probability of getting less than 10 on the first roll and a 5 on the second roll 3. if we have 3 babies what is the probability their is going to be 2 girls? 4. if we have 3 babies what is the probability of having no more than 1 girl? 5. it we have 3 babies and then have another 3 babies what is the probability of us having at least 1 boy and then having all girls?