<ABC + <CBD = <ABD
substitute <ABD = 85 and <CBD = x
<ABC + x = 85
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
2 = m / 2  - 7
2 + 7 = m / 2
9 = m / 2
cross  multiply 
m = 9 * 2
Therefore m = 18 
Hope u understood and it helped. 
 
        
             
        
        
        
Answer:
25 miles
Explanation: 
We can use Pythagoras’ theorem for this
 
        
        
        
2x - 3y = 7 and -3x + y = 7..multiply Equation 2 by THREE and add to Equation 1 
 -9x + 3y = 21...........................watch the y's disappear 
 -7x........ = 28 
 x = -4 
 substitute -4 instead of x in either of the ORIGINAL equations 
 2x - 3y = 7 
 2(-4) - 3y = 7 
 -8 -3y = 7..........add 8 to both sides 
 -3y = 15 
 y = -5 
im not sure
 
        
                    
             
        
        
        
Step-by-step explanation:
TSA of a cuboid= 2(lb+bh+lh)
 = 2(5×4+4×1.5+5×1.5)
 = 2(20+6+7.5)
 = 2× 33.2
 = 66.4 square units