Topic #3: Compound Probability 9. A letter from the word PENNSYLVANIA is chosen at random, then a standard die is rolled. Find
each probability.
a) P(L, then odd)
b) P(N, then less than 4) a) Pla vowel, then at least 3)

10. There are 8 red, 12 blue, 10 yellow, and 6 green marbles in a bag. A marble is chosen at random,
replaced, then another is chosen. Find each probability.
a) P(red, then green)
b) P(not red, then blue)
c) P(both yellow)

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

step-by-step explanation:

to find if any function is an inverse of the other, put the first equation in as x in the next one. then simplify and solve. if at the end you get the statement y = x, then it is an inverse. if you get anything else, it is not.