C, 51 because acute angles are less than 90° but together the angles create a right triangle which is 90°.
        
                    
             
        
        
        
Step-by-step explanation:
We can break this up into pieces, first we do, 7/8 - 1/4, find the least common denominator which is 8, so the equation will be 7/8 - 2/8, which we can now subtract and will give us, 5/8, now that we have done that, we can do 5/8 - 1/2. Since we know that half of 8 (our denominator) is 4. Then the equation would be 5/8 - 4/8, which brings us to 1/8 as our final answer. 
Cheers!
 
        
             
        
        
        
Answer:
r = 7 cm; l = 11cm
The circle encloses more area than the square
Step-by-step explanation:
(a) Radius of circle
The formula for the circumference of a circle is
A = 2πr
r = A/(2π)
Data:
C = 44 in
Calculation:
 r = 44/(2 × 22/7)
    = 44/2 × 7/22
    =   2/2 × 7
    = 7 in
(b) Side of square
P = 4l
 l =   P/4
   = 44/4
   = 11 in
(c) Areas
(i) Circle
A = πr²
   = 22/7 ×   7²
   = 22/7 × 49
   = 22    ×   7
   = 154 cm²
(ii) Square
A = l²
   = 11²
   = 121 cm²
The circle encloses more area than the square.
 
        
             
        
        
        
Answer:
she will pay 79.36 in taxes 
Step-by-step explanation: