The answer is D: She will have completed 1/2 of this race because she runs 1 km/ 4 minutes and 20/4=5. so, 1*5=5 and 5/10 is 1/2.
        
                    
             
        
        
        
A)	dilation, because size is changed by a factor/ratio
        
                    
             
        
        
        
Answer:
   (b)  67
Step-by-step explanation:
A solution to the differential equation describing the temperature according to Newton's Law of Cooling could be written as ...
   T = (final temp) + (initial difference)×(decay factor)^t
where the decay factor is the fraction of change during 1 unit of time period t.
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Here, the initial difference of 100-25 = 75 degrees decays to 90-25 = 65 degrees in 1 minute. So, the units of t are minutes, the decay factor is 65/75, the initial difference is 75 degrees, and the final temperature is 25 degrees. That lets us write the equation as ...
   T = 25 +75(65/75)^t
Then for t=4, the temperature is ...
   T = 25 +75(13/15)^4 ≈ 67.3 . . . . degrees
After 4 minutes the temperature of the coffee is about 67 degrees.
 
        
             
        
        
        
Answer:
Tell me the expression so I can answer the question!
Step-by-step explanation:
 
        
             
        
        
        
You made the choice to choose the letter A, a second time.