Answer:
The sample size is 
Step-by-step explanation:
From the question we are told that
The standard deviation is 
The precision is 
The confidence level is 
98%
Generally the sample size is mathematically represented as
Where 
is the level of significance which is mathematically evaluated as
%
and 
is the critical value of which is obtained from the normal distribution table as 2.326
substituting values
193/990 Would be the answer. If you want the steps to find it, just ask.
Answer:
The frequency doesn't change. If the wavespeed increases, then the wavelength must also increase ... It's just the distance the wave travels during each complete wiggle.
Step-by-step explanation:
- Sound waves are a type of mechanical wave which requires a material medium for transmission. The transmission of such waves occurs as a result of vibration of particles in the material medium. The faster the vibration of the particles the higher the speed of the sound waves.
- When a sound enters a new medium where the sound travels faster, it means the vibration of particles is high, and the wavelength of the waves increases which means the speed of the wave has increased. The frequency on the other hand will remain constant.
Answer:
A. 133
Step-by-step explanation:
Angle P is equal to the angle that is 133 because of the propertys of angles.
Answer:
1 2/14 ; 1 1/7
Step-by-step explanation:
To solve, change the division sign to a multiplication sign and flip the second fraction.
(4/7)/(2/4) = (4/7)(4/2)
Multiply across
(4 * 4)/(7 * 2) = (16)/(14)
Simplify. Change to mixed fraction (& further simplify if needed).
16/14 = 1 2/14
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