Answer:
   (d)  f(x) = -x²
Step-by-step explanation:
For the vertex of the quadratic function to be at the origin, both the x-term and the constant must be zero. That is, the function must be of the form ...
   f(x) = a(x -h)² +k . . . . . . . . . . vertex form; vertex at (h, k)
   f(x) = a(x -0)² +0 = ax² . . . . . vertex at the origin, (h, k) = (0, 0)
Of the offered answer choices, the only one with a vertex at the origin is ...
   f(x) = -x² . . . . . a=-1
 
        
             
        
        
        
Answer:
sin(x) and cos(y) are equal and have ratio of 1 : 1
First find the missing hypotenuse using Pythagoras theorem:
a² + b² = c²
12² + 5² = c²
c = √144+25
c = 13
using sine rule:


using cosine rule:


 
        
                    
             
        
        
        
Answer:
x(yz)
Step-by-step explanation:
(xy)z = x(yz) by the associative property of multiplication.
Answer: x(yz)
 
        
                    
             
        
        
        
Answer:
Hi how are you doing today Jasmine
 
        
             
        
        
        
Answer:
$64
Step-by-step explanation:
80x.20=16
80-16=64