Whenever you have a decision tree like this, the probability of reaching a specific leaf is the multiplication of the probabilities of each step you have to reach the leaf.
So, in order to reach the "hardcover and nonfiction" leaf, we have to take the "buys hardcover" branch (probability 0.35), and then the "buys nonfiction" branch (probability 0.55).
Given what we said above, the probability for "hardcover and nonfiction" is

Answer:
It is D Because I'm soo Smart And the Question is easy
20 Bc 15x15=225 and 25x25=625 625-225=400 and 400 squared root is 20
Answer:
2
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9
Step-by-step explanation:
I am not 100% sure but I think this is right.
Answer:
<em>https://quizlet.com/140197143/surface-area-and-volume-surface-area-of-rectangular-pyramids-flash-cards/ an that don't work here is anyone https://quizlet.com/510425408/math-_7-unit-review-three-dimensional-geometry-flash-cards/</em>
Step-by-step explanation: