Where’s the image? There has to be an image showing the angles to see which pairs of angles are supplementary.
Hey the answer to your question is -6.4
You can do
83 - 5 to find the answer
So that's
78 or
5 + 78 = 83
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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I think it’s positive correlation
