Answer:
might be wrong..but i think its all real numbers
 
        
             
        
        
        
T1 + t2 = 2h and 30min;
t1 * 600 = t2 * 400 => t2 = (3/2) * t1;
then, t1 +  (3/2) * t1 = 2h and 30min => 2t1 + 3t1 = 5h => 5*t1 = 5h => t1 = 1h => t2 = 1h and 30 min;
The distance is 2 * 1 * 600 = 1200miles;
        
             
        
        
        
Answer:t+3
Step-by-step explanation:
4t+7t+3-10t
11t+3-10t
t+3
 
        
             
        
        
        
1,995,000
The number after the thousands place is 2, which is less than 5 so the thousands place is rounded to 5,000 instead of 6,000.