if a car travels at a speed of 25 miles per hour for t hours then travel s 45 miles per hour for m hours what does the expressio
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Use the law of cosines to find a: 
So to use the given numbers you get:
Which would come out to equal about 35.94
so a=35.9
So to use the given numbers you get:
Which would come out to equal about 35.94
so a=35.9