Answer:
Step-by-step explanation:
im pretty sure it is 768/187.5 = about 4
because you are taking the highest number and putting it over the lowest number
  
        
             
        
        
        
Answer: May you show the angle we are supposed to solve? its a bit unclear. or can you explain the angle to us?
Step-by-step explanation:
 
        
             
        
        
        
81 a² - 25  is a difference of two squares and its factors are (9a + 5z³) and (9a - 5z³)
 is a difference of two squares and its factors are (9a + 5z³) and (9a - 5z³)
Step-by-step explanation:
The difference of two squares is a binomial of two terms each term is a square and the sign between the two terms is (-), its factorization is the product of two identical binomials with different middle signs
- a² - b² is a difference of two squares
- a² - b² = (a + b)(a - b)
∵ The binomial is 81 a² - 25  
 
∵  = 9
 = 9
∵  = a
 = a
∴ 
∵  = 5
 = 5
∵  = z³
 = z³
∴ 
- The two terms have square root
∵ The sign between them is (-)
∴ 81 a² - 25  is a difference of two squares
  is a difference of two squares
∵ Its factorization is two identical brackets with different 
    middle signs
∵ 81 a² = 9a × 9a
∵ 25  = 5z³ × 5z³
 = 5z³ × 5z³
- The terms of the two brackets are 9a and 5z³
∴ 81 a² - 25  = (9a + 5z³)(9a - 5z³)
 = (9a + 5z³)(9a - 5z³)
81 a² - 25  is a difference of two squares and its factors are (9a + 5z³) and (9a - 5z³)
 is a difference of two squares and its factors are (9a + 5z³) and (9a - 5z³)
Learn more:
You can learn more about the difference of two squares in brainly.com/question/1414397
#LearnwithBrainly
 
        
             
        
        
        
Since the three angles of a triangle add to give 180°
The the size of the largest angle 4 = 180° × 

                                                       =  180° × 
 ∴ the size of the largest angle = 80°
∴ the size of the largest angle = 80°
 
        
        
        
Answer:
the answer is -5< x 
Step-by-step explanation:
you you start by subtracting 7 by both sides leaving you with -20<4x. then then divide both sides by 4 leaving you with -5< x