Answer:
C
Step-by-step explanation:
Parallel and opposite sides of a parallelogram are equal. Hence, we can say:
x + 30 = 2x - 10
and
2y-10 = y +10
Solving first one, we get:
x + 30 = 2x - 10
30+10 = x
x = 40
Also
2y - 10 = y + 10
y = 10 + 10 
y = 20
Now, z = x - y, so
z = 40 - 20 = 20
Answer C is right.
 
        
             
        
        
        
Answer: 
Step-by-step explanation: 
total sides = 6
p (rolling a 1) = 
p (rolling a 2) = 
Note:
or - add
and - multiply 
∴ 
∴ 
hence, p (rolling a 1 or 2) = 
 
        
             
        
        
        
If you are doing a literal equation all you have to do is isolate the h.
First get rid of the fraction by multiplying both sides by 2.
2a=bh
Then divide both sides by b.
2a/b=h
Hope this helps!
        
                    
             
        
        
        
Answer:
139
Step-by-step explanation:
14+14+28+33+33+17 = 139
 
        
                    
             
        
        
        
Answer:
-5.2, -4.75, -9/2
Step-by-step explanation: