Answer:
6
9
6.48
Step-by-step explanation:
this is the easiest way to solve for percentage:
Where all the percents (except 100) would go in part
and the whole number would go in whole
Then multiply 24 × 25 ÷ 100 = 6
Multiply 60 by 25 then divided by 100 = 9
Then for the last one 9 is what percent of 72
all we have to do is multiply 9 and then convert 72 into a decimal (0.72)
Then 9 × 0.72 = 6.48
I think the answer is 32 degrees but i am not 100% sure
Answer:
The kinetic energy of the roller coaster is 1600000 J.
Step-by-step explanation:
Given:
Mass of the roller coaster is 8000 Newton's and speed 20.0 meters/seconds.
Now, we need to find the kinetic energy
of the roller coaster.
So, Mass of roller coaster (m) = 8000 N.
Velocity of roller coaster (v) = 20.0 m/s.
Now, putting the formula of kinetic energy:
![E_{k} = \frac{1}{2}\times m\times v^{2}](https://tex.z-dn.net/?f=E_%7Bk%7D%20%3D%20%5Cfrac%7B1%7D%7B2%7D%5Ctimes%20m%5Ctimes%20v%5E%7B2%7D)
![E_{k}=\frac{1}{2} \times 8000\times 20^{2}](https://tex.z-dn.net/?f=E_%7Bk%7D%3D%5Cfrac%7B1%7D%7B2%7D%20%5Ctimes%208000%5Ctimes%2020%5E%7B2%7D)
![E_{k}=\frac{1}{2} \times 8000\times 400](https://tex.z-dn.net/?f=E_%7Bk%7D%3D%5Cfrac%7B1%7D%7B2%7D%20%5Ctimes%208000%5Ctimes%20400)
![E_{k}=\frac{1}{2} \times 3200000](https://tex.z-dn.net/?f=E_%7Bk%7D%3D%5Cfrac%7B1%7D%7B2%7D%20%5Ctimes%203200000)
![E_{k}=1600000](https://tex.z-dn.net/?f=E_%7Bk%7D%3D1600000)
Therefore, the kinetic energy of the roller coaster is 1600000 J.
9 seconds, 9^2 = 81, 81 x 16 = 1296. 1296 - 1296 = 0 or when the ball has a height of zero from the ground.
Answer:
it can be either one of this
x<-3 or x > -1