In this case you divide 170 by 7 which = 24.29 so 24.29 is your answer, good luck.
        
             
        
        
        
Answer:
C. 10.15
Step-by-step explanation:
If you left 8.25 and changed the minus sign to a addition sign and the -1.9 to just 1.9 and then add 8.25 + 1.9 together you will then get 10.15 a way to remember this is “leave, change, change,” you leave the first number and change the subtraction and negative number sign. :)
 
        
                    
             
        
        
        
Answer:
The area of the regular hexagon is 
Step-by-step explanation:
we know that 
The area of a regular hexagon can be divided into 6 equilateral triangles
so
step 1
Find the area of one equilateral triangle

we have

 ----> is the apothem
 ----> is the apothem
substitute


step 2
Find the area of 6 equilateral triangles

 
        
             
        
        
        
The mass of radioactive material remaining after 50 years would be 48.79 kilograms
<h3>How to determine the amount</h3>
It is important to note that half - life is the time it takes for the amount of a substance to reduce by half its original size.
Given the radioactive decay formula as
m(t)=120e−0.018t
Where
t= 50 years
m(t) is the remaining amount
Substitute the value of t


Find the exponential value
m(t) = 48.788399
 m(t) = 48.79 kilograms to 2 decimal places
Thus, the mass of radioactive material remaining after 50 years would be 48.79 kilograms
Learn more about half-life here:
brainly.com/question/26148784
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