Answer:
Step-by-step explanation:
Given that, 
Outcomes Heads= 4heads and
Outcomes Tails= 6tails
Total outcome of events n=10
Probability of head in is first throw is, the is the outcome of head divide by the total possible outcomes
P(Head in first throw)=4/10
P(H)=2/5 
P(H) = 0.4
P(H) =40%
 
        
                    
             
        
        
        
Calculate what they give u and u should get the answer if u still need help let me know
        
                    
             
        
        
        
Part A. 
The trip starts at 8am which corresponds to 0 hrs, point (0hr, 0mi)
2hrs later it's 10am. .point (2hr, 140mi)
The average speed is the slope between 0 and 2 hrs. Remember the slope formula m = Δy/Δx  
m = (140 - 0) / (2 - 0)  
m = 70 mph 
Part B. Average speed from 11am - 2pm  
11am is point (3hr, 140mi)  
2pm is point (6hr, 300mi)  
As you can see from the graph, the speed or slope changes at 1pm (5,260). You Can just use the start and end points. 
m  = (300-140) / (6-3)  
m = 160/3
53.3 mph 
* It comes out the same solution as if you average the two different slopes. 2hrs at 60mph + 1 hr at 40mph = (120 + 40)/3 = 160/3  
Part C.  Total average speed = total distance / total time driving
He went 70 mph for 2 hrs 
stopped for an hour (slope is zero, no speed)
60 mph for 2hrs 
40mph for 1 hr
 300mi /5hr = 60mph 
Part D. No Question.... 
 
        
             
        
        
        
30% is .3 so 20 times .3 is 6 extra miles so 30 plus 6 is 36 miles
        
             
        
        
        
1/4":1' = 1/4" : 1'= 1:48
So the dimensions of the model are
L=80'/48=960"/48=20"
W=32'/48=384/48=8"