Answer:
y=8.
Step-by-step explanation:
all the details are in the attachment.
Answer:
35/79
Step-by-step explanation:
Assuming you can't choose the same song a second time, the probability is 35/79.
If you can choose the same song, the probability is 36/80, which reduces to 9/20.
Answer:
1: male + female
30
2: 140 + 25x
550
Step-by-step explanation: