Speed = distance/time
Speed = 90 meters/45 seconds
Simplify the above answer
Speed = 2 meters/second
You can double-check this: You walk 2 meters per second, so multiply 2 by 45 (that is how many seconds), and you get 90.
X^2/3 = 64
![x^{2} =64^{3}](https://tex.z-dn.net/?f=%20x%5E%7B2%7D%20%3D64%5E%7B3%7D)
![x = 64^{3/2}](https://tex.z-dn.net/?f=x%20%3D%2064%5E%7B3%2F2%7D)
it is easier to first find square root of 64 and than power it to 3
square root of 64 is 8 which means our equation now looks like:
x = 8^3
now the answer is after powering 8 to 3:
x = 512
Answer:
See Explanation
Step-by-step explanation:
The question is incomplete. I will assume the function is:
![f(t) = 15(0.86)^t](https://tex.z-dn.net/?f=f%28t%29%20%3D%2015%280.86%29%5Et)
Required
Determine the rate of decay
In an exponential function
,
The decay rate of the function is calculated as:
![1 - r = b](https://tex.z-dn.net/?f=1%20-%20r%20%3D%20b)
By comparison:
![b = 0.86](https://tex.z-dn.net/?f=b%20%3D%200.86)
So, the equation becomes:
![1 - r = 0.86](https://tex.z-dn.net/?f=1%20-%20r%20%3D%200.86)
Make r the subject
![r = 1 - 0.86](https://tex.z-dn.net/?f=r%20%3D%201%20-%200.86)
![r = 0.14](https://tex.z-dn.net/?f=r%20%3D%200.14)
<em>The rate of decay is 0.14</em>
-8 and -9 because it is negative
200, because 8% is 8 parts of 100%. Then 1 part of that 100% is 16/8=2. Then 100% is the number i.e; 200