Jack is learning to play piano. He knows that a piano has 88 keys and that there are 12 unique keys in each group called octave.
2 answers:
Answer:
7 octaves
Step-by-step explanation:
Total number of keys in piano = 88 keys
Numbers of keys in each group called octave= 12 unique keys
We have to find the number of complete octaves on piano
Number of octaves consists of 12 keys=
Number of octaves consists of 12 keys=
Number of octaves consists of 12 keys= 7 octaves
Hence, the correct answer is 7 octaves
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Answer:
By splitting the line segments into equal parts, we find that the length of the line segment formed by joining the mid-points is 5.5 units.
Step-by-step explanation:
Given lengths show that the length of JK is 5 units, KL is 4 units and LM is 6 units. Let the midpoint of JK be A. This means JK is splited into two equal parts JA and AK. Since the lengths of both the segments are same, it will be 5/2 = 2.5 units.
Now, let the midpoint of LM be B. So, we have two equal line segments LB and BM of length 6/2 = 3 units.
So, the length of the line segment formed by joining A and B will be 2.5 + 3 = 5.5 units
For more explanation, refer the following link:
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