Answer: for 90 degrees it will be 1
for 180 degrees it will be  /2
/2
Step-by-step explanation:
 
        
             
        
        
        
It would be subtraction I think
        
             
        
        
        
Answer:
A. Rotation of 90° counterclockwise about the origin.
Step-by-step explanation:
If you look, You can see that the diagram has been rotated, you just have to figure out witch way. 
A. is your answer.
 
        
             
        
        
        
Answer:
= -1 5/12 hope this helps
 
        
             
        
        
        
Answer:

Step-by-step explanation:
multiply the 2x by x and 7 and then multiply 3 by x and 7. you will get 2 +14x+3x+21. combine like terms so add 14x to 3x and thats the only like trerms in the equation. so 2x^2+17x+21
+14x+3x+21. combine like terms so add 14x to 3x and thats the only like trerms in the equation. so 2x^2+17x+21