Time=(distance)/(speed)
speed=55 mi/hr
Total distance=440 miles
Distance covered=275 miles
remaining distance=440-275=165 miles
Time taken to cover the remaining distance will be:
time=165/55=3 hours
Total time taken to travel=440/55=8 hours
if we are to use the equation given by:
55h+275=440
time taken will be found by solving for h, thus we shall have:
55h=440-275
55h=165
h=165/55
h=3 hours
Answer: 3 hours
        
             
        
        
        
Answer:
 tons of high steel and
 tons of high steel and  tons of low steel
 tons of low steel
Step-by-step explanation:
Let x be the number of tons of high grade steel and y be the number of tons ow low grade steel needed.
In x tons of high grade steel there are 
 tons of iron
 tons of iron
 tons of magnese
 tons of magnese
In y tons of low grade steel there are 
 tons of iron
 tons of iron
 tons of magnese
 tons of magnese
NASA orders 500 tons of steel, so

and specifies that it must be in the proportion 80% iron and 20% magnese, so

From the first equation,

Substitute it into the second equation:

 
        
             
        
        
        
One thing for sure it is not b,d,c its a
        
                    
             
        
        
        
Answer: 
So your learning probability 
The answer is B
 
        
             
        
        
        
Answer:
36,686 
Step-by-step explanation:
5.88 x 12 over 10 = 240 
240 x 26 = 36,686