Answer:
4. The choose b. 0.000355
Ans; 3.55× 10-⁴ = 0.000355
5. The choose C. 80600
Ans; 8.06 ×10⁴= 806×10² = 80600
I hope I helped you^_^
 
        
                    
             
        
        
        
It will become a stink. It will become extinct because if people keep doing what you’re doing it will get no better.
        
             
        
        
        
Answer:
Explanation:
The formula for this, the easy one, is
 where No is the initial amount of the element, t is the time in years, and H is the half life. Filling in:
 where No is the initial amount of the element, t is the time in years, and H is the half life. Filling in:
 and simplifying a bit:
 and simplifying a bit:
 and
 and 
N = 48.0(.0625) so
N = 3 mg left after 12.3 years
 
        
                    
             
        
        
        
Answer:
Sorry I'm wrong The person above is correct.
I tried.
 
        
                    
             
        
        
        
When a  woman walks south at a speed of 2.0mph for 60 minutes. She then turns around and walks north at a distance of 3000m in 25 minutes. then the woman's average speed during her entire motion would be  73.15 meters /minute.
<h3>What is speed?</h3>
The total distance covered by any object per unit of time is known as speed.
the mathematical expression for speed is given by
speed = total; distance /total time 
As given in the problem a woman walks south at a speed of 2.0mph for 60 minutes
60 min = 1 hour 
1 mile = 1.60934 km 
The distance covered by her southwards  =  speed ×time 
                                                                       =2 mph × 60 minutes 
                                                                       = 3.218 km 
She then turns around and walks north at a distance of 3000m in 25 minutes
The distance covered northward is 3000m
speed = total distance /total time 
           =(3218 +3000) /(60+25)
           =73.15 meters /minutes 
Thus, The average speed of the woman would be 73.15 meters /minute.
Learn more about speed from here 
brainly.com/question/13263542
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