Answer:
a theory explaining the structure of the earth's crust and many associated phenomena as resulting from the interaction of rigid lithospheric plates which move slowly over the underlying mantle.
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
hope it will help you
Step-by-step explanation:
follow me and like it.
 
        
             
        
        
        
All you have to do is addition. 2+5+4=11. Or you can break it down and go 2+5=7 and then 7+4=11. Or 5+4=9 then 9+2=11. Or 4+2=6 then 6+5=11.
        
                    
             
        
        
        
Answer:
1. Evaluate 3y - 4 for y =5
3*(5)-4=15-4=11
2. 65 + x = 99 x = ?
65+x=99
x=99-65
x=34
3. Find the product. 38.7 *21
38.7*21=812.7
4. Which value satisfies the equation? 9x + 3 = 30
The right value for x would be:
9x+3=30
9x=30-3
9x=27
x=27/9=3
Step-by-step explanation:
 
        
             
        
        
        
Answer:
5
Step-by-step explanation:
take your price and subtract the monthly price 
115-40=75 
now you have the price of all your extra devices summed up
75÷15=5 extra devices