Answer:
The measure of angle A is 53 degrees 
The measure of angle B is 37 degrees
Step-by-step explanation:
Here in this question, we are interested in calculating the measure of the two angle.
When how angles are complementary, it means the sum of both equals 90 degrees 
mathematically ;
(7x + 4) + (4x + 9) = 90
7x + 4x + 4 + 9 = 90
11x + 13 = 90
11x = 90-13
11x = 77
x = 77/11 = 7 
The measure of angle A = 7x + 4 = 7(7) + 4 = 49 + 4 = 53 degrees 
The measure of B = 4x + 9 = 4(7) + 9 = 28 + 9 = 37 degrees 
 
        
             
        
        
        
Answer:
87
Step-by-step explanation:
Hope this helps 
 
        
                    
             
        
        
        
Answer:
9
Step-by-step explanation:
We have to multiply 60 by 15%
15% =  = 0.15, hence
 = 0.15, hence
number of text = 60 × 0.15 = 9
 
        
                    
             
        
        
        
I'm going to say 180 degrees
        
                    
             
        
        
        
First, convert those inches to feet. 
7in =ish 0.5833333
(you find this by dividing 7/12 on a calculator)
Now you just square 9.583333333
9.583333333^2
9.583333333 * 9.583333333
91.84027777ish
Rounded to the nearest foot, means the answer is 92ft.