Answer:
40°
Step-by-step explanation:
As sum of angles of the triangle is 180°
therefore the third angle will be 180 -( 75 + 65)=40°
x=40°= vertically opposite angle
 
        
                    
             
        
        
        
Answer:
What are the units? 13 x 14 ??or 15 x 16 ?
Step-by-step explanation:
Eitther 182 or 240
 
        
             
        
        
        
- 8x - 9 = - 21
Add 9 to both sides:
- 8x = - 12
Divide both sides by - 8:
x = -12/-8
x = -3/-2
x = 3/2 OR 1.5
Hope this answer helps :)
 
        
                    
             
        
        
        
The point of elimination is to have one variable so example
3x + 2y = 4
7X + 3y = 5
1) Try to find a way to have one variable
7(3x + 2y = 4) ----> 21x + 14y = 28
-3(7x+ 3y = 5) -----> -21x -9y = -15
2) add
0 + 5y = 13
3) solve for the last variable
5y = 13
y = 13/5 = 2 3/5 = 2.8
4) Subsitute the variable to get the other one
3x + 2(2.8) = 4
3x + 5.6 = 4
3x = -1.6
x = 0.533333333 (continue) 
The intersection would be 0.53 with a line above the 3 and 2.8. (0.5333 , 2.8) 
Hope you understand!!
        
             
        
        
        
Answer:
13, 21, 29
Step-by-step explanation:
the difference is 8
so add 8 to last numbers