X - 19 + x + 65 = 180.  180° equals a line, and therefore a linear pair.
Then, solve your equation.  2x = 134.  So, x = 67°.  67 - 19 = 48.  180 - 48 = 132.  The answer is A.
        
             
        
        
        
A box or square is drawn on the right angle triangle to show that it is a right triangle
        
             
        
        
        
1a. 3^1 / 3^2 = 3^1-2 = 3^-1 = 1/3^1 = 1/3. 
2b. 4^2 / 4^4 = 4^2-4 = 4^-2 = 1/4^2.
3c. 6^3/6^5 = 6^3-5 = 6^-2 = 1/6^2. 
4d. 3^-5 • 3^2 = 3^-10 = 1/3^10. 
I believe for the last question its asking only to rewrite exponent as a positive exponent similar to the first question.
        
             
        
        
        
Answer:
move 50x on to the other side then move 500 to the other side too so that it reads 25x-50x *sign*250-500
Step-by-step explanation:
-25x*sign*-250 divide both sides by 25so answer x*sign*100
 
        
             
        
        
        
Answer:
B, 21
Step-by-step explanation:
78 minus 57 is 21, thus B is the correct choice