The shortest distance between the airport A and airport B travels by airplane which departs airport A at a heading of 300 (N 60 W) is 401 miles.
<h3>What is the law of cosine?</h3>
When the two sides of and one angle is known, then to find the third side, the law of cosine is used.
It can be given as,

Here, a,b and c are the sides of the triangle and A,B and C are the angles of the triangle.
An airplane departs airport A at a heading of 300 (N 60 W). After traveling 320 miles, the airplane adjusts its course to 350 (N 10 W) and flies an additional 112 miles to reach airport B.
The image of this problem is attached below. In this image, the two sides 112 miles and 320 miles are shown and the angle between them is 130 degrees. Thus, the value of x is,

Hence, the shortest distance between the airport A and airport B travels by airplane which departs airport A at a heading of 300 (N 60 W) is 401 miles.
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Option 3
Step-by-step explanation:
You bring the like-terms together and then do the math
The test statistics is used to determine if the anxiety medication can happen under a null hypothesis
The test statistics that is an appropriate hypothesis test is 
<h3>How to determine the test statistic</h3>
<u>40 milligrams of medication</u>
Patients = 60
Lower stress level patients = 21
The mean of this medication is:

So, we have:


<u>75 milligrams of medication</u>
Patients = 85
Lower stress level patients = 34
The mean of this medication is:

So, we have:


The test statistic is then calculated as:

The equation becomes

Hence, the test statistics that is an appropriate hypothesis test is 
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Answer:
a1=6
a2=15
a3=24
a4=33
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Step-by-step explanation:
7.3 when rounded to the nearest tenth