Answer:
 
Step-by-step explanation:
A quadratic equation is given to us and we need to solve the equation using the quadratic formula . The given equation is ,
 
Open the brackets in RHS ,
 
Transpose all the terms to LHS ,
 
The general form of a quadratic equation is ax² + bx + c = 0 , and the roots of the equation by the Quadratic Formula ( Shreedhacharya's Formula ) is given by ,
 
Using the quadratic formula , we have ,
 
Simplify ,
 
 
 

 
        
             
        
        
        
Answer:
Step-by-step explanation: 3²+12²=x² simplifies to 9+144=x² so 153=x² or x²=153.
 
        
             
        
        
        
Answer:
C
Step-by-step explanation:
According to SohCahToa, cosine is adjacent over the hypotenuse.
The adjacent when looking from angle b, is 21.
The hypotenuse of this triangle is 29.
So Cos B=21/29
 
        
             
        
        
        
To solve this question, we use simple division:

So, there are
 10 servings of 4/5 of a cup in 8 cups.