Answer:
Step-by-step explanation:
Equation of unit circle is:
Plug
in above equation.
Since, point P is in the fourth quadrant.
Therefore, x - coordinate should be positive.

Answer:
4,482,186 becomes 4,482,190
Step-by-step explanation:
80 miles because if 1=20 then 2=40 3=60 4=80
Answer:
a

b

Step-by-step explanation:
From the question we are told that
The sample size is n = 103
The sample mean of sag is 
The sample mean of swells is 
The standard deviation of sag is 
The standard deviation of swells is 
The number of swell for a randomly selected transformer is k = 100
The number of sag for a randomly selected transformer is c = 400
Generally the z-score for the number of swells is mathematically represented as

=> 
=> 
Generally the z-score for the number of sags is mathematically represented as


