Answer:
302
Step-by-step explanation:
420(grams per sec)x60(seconds in a min) = 25,200(grams per min)
25,200x60(min in an hour) = 1,512,000(grams an hour)
1,512,000/1,000(grams in a kilogram) = 1,512 (kilograms per hour)
1,512/20 (size of bag) = 75.6 (bags filled per hour)
75.6x4(hours elapsed asked by the question) = 302 bags completly filled in 4 hours
 
        
             
        
        
        
Answer:
when high-energy particles from the Sun bounce off Earth’s magnetic field
 
        
             
        
        
        
Answer:
B and D
Step-by-step explanation:
if they had letters it would be
A     B
C     D
options B and D are similar
 
        
                    
             
        
        
        
Answer:
3(9e + 8)
Step-by-step explanation:
the highest common factor is 3 so factor it out.