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.
✌
<span>The proportion of use of the properties of the equation : the left side must be equal to the right . We check to see if there is so
</span>
![\frac{2}{8} = \frac{3}{9}](https://tex.z-dn.net/?f=%20%5Cfrac%7B2%7D%7B8%7D%20%20%3D%20%20%5Cfrac%7B3%7D%7B9%7D%20)
<span>shorten fractions
</span>
![\frac{1}{4} \neq \frac{1}{3}](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B4%7D%20%20%20%20%5Cneq%20%20%20%20%5Cfrac%7B1%7D%7B3%7D%20)
<span>The equation is contradictory, it can not be used to calculate the ratio
</span><span>The answer is no</span>
Answer:
72.2566311
Step-by-step explanation:
Circumference = 2πr
We don't have the radius, but we do know that half of the diameter is the radius, so 23/2 = 11.5. r = 11.5
Now, plug the radius into the equation:
2π(11.5)
Solve:
2π(11.5) = 72.2566311
Answer:
4 + 60 + 300 + NaN + 70000 + 600000 + 1000000 + NaN + 900000000