Answer:
x =39°
the total interior angles of a triangle is 180°
let the unknown angle be x,
solve:
x + 39 + 102 = 180°
x = 180° -  39° - 102°
x = 39°
Therefore the unknown angle is 39°
 
        
                    
             
        
        
        
Answer: He had 14 more touchdowns than he did fumbles.
Step-by-step explanation:
Step 1. Ok, so we need to see how many times 9 will divide into 18. 
18/9=2. 
Step 2. So now that we know that 9 goes into 18 two times and we know he has two fumbles for every 9 touchdowns we can multiply 2 by 2 to find out how man fumbles he had.
2*2=4
Step 3. Now to find out how many more touchdowns than fumbles he had we need to subtract his fumbles from his touchdowns. 
18-4= 14. So, now we know he had 14 more touchdowns than he did fumbles. 
Hope this helps!
 
        
             
        
        
        
Step-by-step explanation:
The algebraic expression for The sum of z and 7 algebraic expression is given as: 
z + 7
 
        
             
        
        
        
Answer:
-6r+6
Step-by-step explanation:
Given data
We are given the expression
8-(6r+2) 
let us expand it by opening the bracket
=8-6r-2
collect like terms
=8-2-6r
=6-6r
rearrange
=-6r+6
Hence option A is correct