For the first one it is x= (y+3)/4
Answer:
C. The number of responces 
is also 46
Step-by-step explanation:
Note that:
means both p and q must hold;- means either p or q must hold.
From the diagram,
- the number of responses is 46;
- the number of responces is also 46;
- the number of responces
is 0; - the number of responces which are neuther p nor q is 20.
So, you can state that the correct answer is C
0.15c>10+0.10c
0.05c>10
c>200
The probability that he first chooses an advanced book and then chooses a beginner book is 6/121.
<h3>Probability</h3>
Given:
Beginner book=2
Intermediate book=6
Instructional piano books=11
Advanced books=3
Hence:
Probability=(2×3)÷(11×11)
Probability=6/121
Therefore the probability that he first chooses an advanced book and then chooses a beginner book is 6/121.
Learn more about probability here: brainly.com/question/24756209
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