Hi there.
Let number of octaves be X.
Equation :
7x+1=36
7x=36-1
7x=35
X= 35/7
X= 5.
Therefore there are 5 number of black keys in an octave.
Hope it helps u.
✌
Answer:
Option (3)
Step-by-step explanation:
By applying cosine rule in the triangle ABC,
BC² = AC² + AB² - 2(AC)(AB)cosA
5² = 3² + 7²- 2(3)(7)cosA
25 = 9 + 49 - 42cos(A)
25 = 58 - 42cos(A)
cos(A) =
A =
A = 38.21°
A ≈ 38°
Option (3) will be the correct option.
You need to give me the options
My answer is 570.69
have a nice day!
Answer:
its going 300 miles per hour
Step-by-step explanation: