Answer:
22.38 g of silicone-32 will be present in 300 years.
Step-by-step explanation:
A radioactive half-life refers to the amount of time it takes for half of the original isotope to decay and its given by
                                            
where,
 = quantity of the substance remaining
 = quantity of the substance remaining
 = initial quantity of the substance
 = initial quantity of the substance
 = time elapsed
 = time elapsed
 = half life of the substance
 = half life of the substance
From the information given we know:
- The initial quantity of silicone-32 is 30 g.
- The time elapsed is 300 years.
- The half life of silicone-32 is 710 years.
So, to find the quantity of silicone-32 remaining we apply the above equation

22.38 g of silicone-32 will be present in 300 years.
 
        
             
        
        
        
Answer: second option.
Step-by-step explanation:
 You must apply 
 Then, given the right triangle and the angle D, the opposite side and the hypotenuse of the triangle are the following:
 
 Therefore, when you substitute values, you have:
 
 Reduce the fraction, then you obtain:
  
 
 
 
        
                    
             
        
        
        
Hello there.
<span>How many solutions does the system of equations have y=5x+7 and 3y-15x=18
</span><span>B two
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15/7 is approximately 2.143