@Texaschic101 you are correct .75 x 64 will indeed equal 48 sq feet. so your answer will be 64 tiles. hope this was of help!
        
             
        
        
        
Answer:
   17°
Step-by-step explanation:
Let x represent the measure of the angle.
   (90 -x) = 5 + 4x . . . . the complement is 5° more than 4 times the angle
   85 = 5x . . . . . . . . . . add x-5 to both sides
   17 = x . . . . . . . . . . . . divide by 5
The measure of the angle is 17°.
 
        
                    
             
        
        
        
Please write   (x4 – 2) ÷ (x + 1)  as  <span>(x^4 – 2) ÷ (x + 1).
We can find the remainder using synth. div. as follows:
      _________________
-1  /  1    0    0    0    -2
              -1    1   -1    1
     ------------------------------
         1   -1    1   -1    -1
The remainder is -1.</span>
        
             
        
        
        
If you would like to solve the system of linear equations, you can do this using the following steps:
2x - y = -1 ... y = 2x + 1
2x + y = -7 ... y = -7 - 2x
The correct result would be: y = 2x + 1, <span>2x + y = -7.</span>