The choices are not attached but we can solve the problem from the given information
Answer:
The expression can be used to find h is   
 
The height of the cone is  cm
 cm
Step-by-step explanation:
The formula of the volume of the cone is V =  π r² h, where
 π r² h, where 
- r is the radius of its base
- h is the height of it
Let us find the height of the cone from the formula of its volume
∵ V =  π r² h
 π r² h
- Multiply both sides by 3
∴ 3 V = π r² h
- Divide both sides by π r²
∴ 
- Switch the two sides
∴  
 
The expression can be used to find h is   
 
∵ The radius of the cone is 7 cm
∴ r = 7
∵ The volume of the cone is 147 cm³
∴ V = 147
- Substitute them in the expression of the height to find it
∵  
∴ h =  cm
 cm
The height of the cone is  cm
 cm
 
        
             
        
        
        
I think that the answer is b
 
        
             
        
        
        
Given that the bacteria has been modeled by the function:
r(t)=(450.267)e^(1.12567t)
thus the number of bacteria after 3 hours will be:
r(3)=450.267e^(1.12567×3)
r(3)=13,185.20623
The number of bacteria after 3 hours will be:
13, 185.20623
        
             
        
        
        
Answer:
Step-by-step explanation:
Follow the rainbow      twice
 
        
             
        
        
        
Yes they are congruent because they have just been translated in a rotation. But they still hold the same area and perimeter.