Answer:
its 8.5
Step-by-step explanation:
 
        
             
        
        
        
Answer:
A = 60°
Step-by-step explanation:
First to find the missing angle you add the three known angles, 
90 + 135 + 75 = 300
Then, you subtract, 360 - 300 = 60
<h3>So, 360° = 60° + 90° + 135° + 75°</h3><h3 />
 
        
                    
             
        
        
        
Answer:
8 1/4
Step-by-step explanation:
Solution by Formulas
converting mixed numbers to fractions, our initial equation becomes,
−11 -9
 3×4
Applying the fractions formula for multiplication,
−11×−9
3×4
=99
12
Simplifying 99/12, the answer is
=814
 
        
                    
             
        
        
        
Step-by-step explanation:
there 5^(n+1) + 5^(n+2) = 5^n x 5^1 + 5^n x 5^2 breaking them as x^(a+b) = x^a x x^b
then taking common 5^n from both terms 
 
        
             
        
        
        
Answer:
198.00
Step-by-step explanation:
I am not sure but I hope this helps some.