23 + 35 + A=180
58 + a =180
-58         -58
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      A   = 122 degrees
        
                    
             
        
        
        
First count the number of digits after the first one 6  This = 6 and is the exponent of 10  so the required notation is
6.000370 * 10^6
        
                    
             
        
        
        
Well, the average of a sum of number is found by adding each given number and dividing that number by the amount of given numbers. 
Example: 5+4+3+8=20 
                and 20/4 = 5, the average of the numbers
Multiply 1.8 by 8.0 using this format:
1.8
x8.0
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Hope this helped
        
             
        
        
        
Answer:
Yes
No
Yes
and 
Yes
Step-by-step explanation:
Sorry if im wrong Happy Holidays