To determine the total number of quarter notes in the notation excerpt, let's analyze each measure:
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Measure 1: Two half notes. Each half note is equal to two quarter notes. Therefore, there are:
- \( 2 \text{ half notes} \times 2 \text{ quarter notes/half note} = 4 \text{ quarter notes} \)
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Measure 2: Four eighth notes, one quarter note, and one quarter rest. The four eighth notes are equal to two quarter notes:
- \( 4 \text{ eighth notes} \div 2 = 2 \text{ quarter notes} \)
- Plus 1 quarter note.
- Total for Measure 2: \( 2 + 1 = 3 \text{ quarter notes} \)
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Measure 3: Two quarter notes, two eighth notes, and one quarter note. The two eighth notes equal one quarter note:
- \( 2 \text{ quarter notes} + 1 \text{ quarter note from eighth notes} + 1 \text{ additional quarter note} = 4 \text{ quarter notes} \)
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Measure 4: One whole note. One whole note is equal to four quarter notes:
- \( 1 \text{ whole note} = 4 \text{ quarter notes} \)
Now, let's sum the quarter notes from each measure:
- Measure 1: 4 quarter notes
- Measure 2: 3 quarter notes
- Measure 3: 4 quarter notes
- Measure 4: 4 quarter notes
Total quarter notes: \[ 4 + 3 + 4 + 4 = 15 \]
So, there are 15 quarter notes in the notation excerpt.
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