Answer:it’s a I think
Step-by-step explanation:
 
        
             
        
        
        
3+x
This is a trick question. Unless we know how much she’s eaten for lunch, we can’t figure out how much she ate.
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
To find the surface area of a regular pyramid use the formula:
S = 1/2 × l × p + b
Surface = 1/2 × lateral height × perimeter of the base + area of the base 
 
        
                    
             
        
        
        
Answer:
a = 16.733
Step-by-step explanation:
Since this is a right triangle, we can use the Pythagorean theorem
a^2 + b^2 = c^2
a^2 + 9^2 = 19^2
a^2 = 19^2 - 9^2
a^2 = 361-81
a^2 =280
Taking the square root of each side
sqrt(a^2) = sqrt(280)
a = 16.73320053
Rounding to the nearest thousandth
a = 16.733
 
        
             
        
        
        
Answer:
B
Step-by-step explanation:
45-45-90 rt. triangle