Answer:
Step-by-step explanation:
This is an Arithmetic Series with common difference 4 and first term 3
so the nth term an = 3 + (n -1)4
= 4n - 1.
The sum of n terms
= n/2 (a1 + L)
= n/2(3 + 1671)
=  837n.
There are (1671-3) / 4 + 1 = 418 terms in the series, 
so the total value of the series is 837*418
= 349,866.
.
 
        
             
        
        
        
Answer:
∠EGF = 65°
Step-by-step explanation:
Since EF = EG the triangle is isosceles and the base angles are equal, that is
∠EGF = ∠GEF
∠EGF =  =
 =  = 65°
 = 65°
 
        
                    
             
        
        
        
Answer:
3120
Step-by-step explanation:
 step 1:multiply 8 with 0 and 7 with 0
step 2:add a 0 in the end and multiply 8 with 4 . you get 32. take 2 and carry over 3. multiply 7 with 4. you get 28 . add 3 you get 31. now add. you get 3120
 
        
                    
             
        
        
        
When you multiply 3 1/4 by a number greater than one, you will get the answer greater than 3 1/4.