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,

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:
step 2
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
Diameter is equal to 2r
so,
8÷2=4
Answer: The reason why this is the answer is because 4 out of 20 (4/20) is 0.2, so 16 out of 20 (16/20) is 0.8
Step-by-step explanation:
Answer:
it's the 3rd one
Step-by-step explanation:
i used m ath way