To find the mean add up all the numbers and divide. The mean absolute deviation is the difference.
Answer:
Oh okayy
Step-by-step explanation:
Answer:
4Hz
Step-by-step explanation:
Standard form of a sine or cosine function,
y = acos(b(x+c))
where a is the amplitude, b is the value to find the period. and c is the phase shift.
Period = \frac{2\pi}{b}
From the equation given in the question,
![y = 3cos(8\pi \: t + \frac{\pi}{2} ) \\ y = 3cos(8\pi(t + \frac{1}{16} )) \: \: (factorising \: 8\pi \: out)](https://tex.z-dn.net/?f=y%20%3D%203cos%288%5Cpi%20%5C%3A%20t%20%2B%20%20%5Cfrac%7B%5Cpi%7D%7B2%7D%20%29%20%5C%5C%20y%20%3D%203cos%288%5Cpi%28t%20%2B%20%20%5Cfrac%7B1%7D%7B16%7D%20%29%29%20%5C%3A%20%20%5C%3A%20%28factorising%20%5C%3A%208%5Cpi%20%5C%3A%20out%29)
We can see:
Amplitude = 3,
Period = \frac{2\pi}{8\pi} = 1 / 4
Phase Shift = 1 / 16
Now we want to find the frequency.
Frequency = 1 / Period
= 1 / (1/4)
= 4Hz
Answer:
5/7
Step-by-step explanation:
take the basic fact 5 - 3
Answer: 1 1/4
Step-by-step explanation: