Answer:
1.861(10²)
Step-by-step explanation:
Proper scientific notation only has the ones place and decimals. To get the same value again, we would need the exponent to be 2 and not -2.
 
        
             
        
        
        
Answer: C two solutions
Step-by-step explanation:  
The Difference of Two Squares theorem says that any time an equation may be written as a difference between squares A² - B² = 0 it may be rewritten as two products, the sum and difference of the square roots (A + B) (A - B)
Hope this helped :)
 
        
                    
             
        
        
        
I know you have 1 and 3 right but I'm sorry about not knowing the rest.
        
             
        
        
        
Tan(12)=-0.6358599287. That means -0.6358599287 = 10/x so you can swap the x to the other side to make x = 10/-0.6358599287 Which equals -15.7 rounded to the nearest tenth.
        
                    
             
        
        
        
Step-by-step explanation:
