Answer:
the answer is two
Step-by-step explanation:
i don't have one but i did the quiz and got it right
Answer:
5:17
Step-by-step explanation:
there are 17 total marbles and 5 that are green. The part is 5 and the whole is 17.
Step-by-step explanation:
3x-21+20=12+2x-6
3x-1= 6+2x
3x-2x=6+1
x=7
Answer:
-1.8, -5/4, 3.2, 2/3
Step-by-step explanation:
Answer:
The Brooks conjecture is true as the proportion of the area of a sector to the area of a circle is only dependent on the angle.
Step-by-step explanation:
The area of a sector for a radius r and an angle θ is given as
![\Delta Sector=\dfrac{1}{2}r^2\theta](https://tex.z-dn.net/?f=%5CDelta%20Sector%3D%5Cdfrac%7B1%7D%7B2%7Dr%5E2%5Ctheta)
Whereas the area of a circle for a radius r is given as
![\Delta Circle=\pi r^2](https://tex.z-dn.net/?f=%5CDelta%20Circle%3D%5Cpi%20r%5E2)
Now the ratio is given as
![\dfrac{\Delta Sector}{\Delta Circle}=\dfrac{\dfrac{1}{2}r^2\theta}{\pi r^2}](https://tex.z-dn.net/?f=%5Cdfrac%7B%5CDelta%20Sector%7D%7B%5CDelta%20Circle%7D%3D%5Cdfrac%7B%5Cdfrac%7B1%7D%7B2%7Dr%5E2%5Ctheta%7D%7B%5Cpi%20r%5E2%7D)
Here as r is the radius of the circle and it is the same therefore the above ratio is simplified to
![\dfrac{\Delta Sector}{\Delta Circle}=\dfrac{\theta}{2\pi }](https://tex.z-dn.net/?f=%5Cdfrac%7B%5CDelta%20Sector%7D%7B%5CDelta%20Circle%7D%3D%5Cdfrac%7B%5Ctheta%7D%7B2%5Cpi%20%7D)
Here as π is constant the only variable here is θ. Thus according to Brooks conjecture when the angles are equal, the proportion of area of each sector relative to the area of the given circle is also equal is true.