This equation involves no x variable, so I assume you want to solve this for D.
First of all, you can divide both sides by 0.785 to get
![0.785D^2 = 0.54 \iff \dfrac{0.785D^2}{0.785} = \dfrac{0.54}{0.785} \iff D^2 = \dfrac{0.54}{0.785} =](https://tex.z-dn.net/?f=%200.785D%5E2%20%3D%200.54%20%5Ciff%20%5Cdfrac%7B0.785D%5E2%7D%7B0.785%7D%20%3D%20%5Cdfrac%7B0.54%7D%7B0.785%7D%20%5Ciff%20D%5E2%20%3D%20%5Cdfrac%7B0.54%7D%7B0.785%7D%20%3D%20)
Since the right hand side is positive, the equation make sense (otherwise we would be asking a square, i.e. a positive number, to equal a negative number). So, we can extract the square root from both sides:
![D^2 = \dfrac{0.54}{0.785} \iff \sqrt{D^2} = \pm\sqrt{\dfrac{0.54}{0.785}} \iff D = \pm\sqrt{\dfrac{0.54}{0.785}}](https://tex.z-dn.net/?f=%20D%5E2%20%3D%20%5Cdfrac%7B0.54%7D%7B0.785%7D%20%5Ciff%20%5Csqrt%7BD%5E2%7D%20%3D%20%5Cpm%5Csqrt%7B%5Cdfrac%7B0.54%7D%7B0.785%7D%7D%20%5Ciff%20D%20%3D%20%5Cpm%5Csqrt%7B%5Cdfrac%7B0.54%7D%7B0.785%7D%7D)
Answer:
Step-by-step explanation:
we know that
![\pi \ rad=180\°](https://tex.z-dn.net/?f=%5Cpi%20%5C%20rad%3D180%5C%C2%B0)
so
using proportion
Convert 360 degrees to radians
I think that the answer is R
using this for points because its not a question
So multiply both sides by 24 (Least Common Multiply of 12, 8, 6)
2x - 24 = 3x + 4 - 4x
2x = 28 - x
3x = 28
x = 9.33