Answer:
60$ on books with 15$ for music, subtraction
Step-by-step explanation:
132 problems because...
there are six 30 minutes in 3 hours so you would multiply 22 with 6 to get 132
(22*6=132)
If the price went down $5 per day for four days straight, then it would have went down $20 total after the four days.
Answer:
7/80
Step-by-step explanation:
Given that: P(B) = 7 / 20, P(A|B)= 1 / 4
Bayes theorem is used to mathematically represent the conditional probability of an event A given B. According to Bayes theorem:

Where P(B) is the probability of event B occurring, P(A ∩ B) is the probability of event A and event B occurring and P(A|B) is the probability of event A occurring given event B.

Answer:
<h2>8/9</h2>
Step-by-step explanation:
9 in total 4 blue
4/9 x 2
8/9