Speed (S) = Distance (D) / time (t)
First stretch
45 = D / 2
D = 45*2
D = 90 mp
How is the same distance:
Second stretch
S = 90 / t
Average speed (AS):
AS = (S1+S2) / 2
60 = [45+(90/t)] / 2
120 = 45+90/t
120-45 = 90/t
75 = 90/t
t = 90/75
t = 1,2 h
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And now:
S = 90 / t
S = 90 / 1,2
S = 75 mph
        
             
        
        
        
Answer:
Y would equal X on Day 65
Step-by-step explanation:
Im guessing by looking at the chart
 
        
                    
             
        
        
        
Answer:
The year 2020 is a leap year, which means February will have 29 days rather than 28, and the overall number of days will be 366 rather than 365. This was also the case in 2016, and the year 2024 will be a leap year once more.
Step-by-step explanation:
 
        
             
        
        
        
Answer:
15
Step-by-step explanation:
First do, 30% + 45% = 75%. Then do, 100-75=25.
Lastly, 
proportions:
    x/60 = 25/100
So your answer is, 15.