Answer: b is the correct answer.
Step-by-step explanation:
Check the picture below
bear in mind the symmetry identities, cos(-θ) = cos(θ)
Answer:0.0019g
Step-by-step explanation:
It would be great if you added an attachment
(I'm answering for the points)
Answer:
The following are the solution to this question:
Step-by-step explanation:
In the given question, some of the values are missing which is defined in the attached file please find it.
In this question, the data is used to represent a standardized exam's scores, which is normally spread out into the test score that is 1530 and its standard deviation 316.
Formula:

If the value of z-score= 1930

The z-score is 1.27
If the value of z-score= 1250

The z-score is -0.886
If the value of z-score= 2250

The z-score is = 2.27
If the value of z-score= 1420

The z-score is = -0.348