Answer:
Dan = 68
bobbi = 62
Step-by-step explanation:
Let Bobbi's height = b 
Let Dan's height = d
the following equations can be determined from the question 
b + d = 130  eqn 1
3b - d = 118  eqn 2 
Multiply eqn 1 by 3 
3b + 3d = 390  eqn 3 
Substract eqn 2 from 3. this gives 
4d = 272
d = 68
Substitute for d in eqn 1 
b + 68 = 130 
b = 62
 
        
             
        
        
        
Answer:
multiply length with breadth which is 34 *42 
 
        
             
        
        
        
Answer:
your questions is wrong it's 2×2-6x=56
answer= X=-9
Step-by-step explanation:
2×2-6x=56
4-6x=56
-6x=56-4
-6x=54
-X=54/6
-X=9
X=-9
 
        
             
        
        
        
Answer: 2,3, and the last one.... I think
Step-by-step explanation:
 
        
             
        
        
        
Answer: y= 4/3x-9
Step-by-step explanation: