Answer:
thx
Step-by-step explanation:
MARK AS BRAINLEST!!
 
        
                    
             
        
        
        
Answer:
db / dt = kb  
this becomes b(t) = Ce^(kt)  
C = 100, the initial population  
P(1) = 420 = 100 e^(1k)  
4.2 = e^k  
ln 4.2 = k  
a) thus, b(t) = 100 e^(t ln 4.2)  
b) b(3) = 100 e^(3 ln 4.2)  
c) growth constant will still be ln 4.2 (constant percentage of populatioin)  
d) 10000 = 100 e^(t ln 4.2)  
100 = e^(t ln 4.2)  
ln 100 = t ln 4.2  
t = ln 100 / ln 4.2 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
the sqare root of 19.9 is 4.46094160464 
 
        
             
        
        
        
        
Answer:
x = -2 or x = 1/3 thus: B & C
Step-by-step explanation:
Solve for x over the real numbers:
2 x^2 + 7 x - 2 = 2 x - x^2
Subtract 2 x - x^2 from both sides:
3 x^2 + 5 x - 2 = 0
The left hand side factors into a product with two terms:
(x + 2) (3 x - 1) = 0
Split into two equations:
x + 2 = 0 or 3 x - 1 = 0
Subtract 2 from both sides:
x = -2 or 3 x - 1 = 0
Add 1 to both sides:
x = -2 or 3 x = 1
Divide both sides by 3:
Answer: x = -2 or x = 1/3